The Mystery of the Lotus Eleven Gullwing Coupe

an AI-upscaled image of the Lotus Eleven Gullwing Coupe

The Mystery of the Gullwing Eleven

Lately, I’ve been captivated by the sleek designs of 50’s race cars, particularly the Lotus Eleven. Blame my friend for this obsession. We’ve discussed his desire to restore a Lotus Eleven for months. The elongated hood and rounded fenders have an undeniable allure. One day, after our conversation about a modified hardtop Lotus Eleven, I couldn’t resist the temptation to search for coupe variants. To my surprise, a Google image displayed an aluminum-bodied Lotus Eleven coupe with gullwing doors.

“What?!” I exclaimed.

Indeed, a stunning Lotus Eleven with a sloping Kammtail roof and gullwing doors existed! I had no idea that Lotus Eleven coupes, referred to as Eleven GTs, were ever produced. There’s even a Lotus Eleven GT Breadvan! Intrigued, I delved into the image results, hoping to unravel the enigma surrounding this unique car. And thus, the mystery of the Lotus Eleven Gullwing Coupe unfolded.

The de Havilland Connection

According to a 1974 exposé written by Rod Leach, published on LotusEleven.org, this particular car was discovered under a tarp at the old de Havilland Aircraft factory in Hatfield, Hertfordshire, England. Leach speculated that the car was likely incomplete. Its exact stage of completion remained unknown when a local dealer “rescued” it, subsequently stripping parts like the engine and bonnet. From there, the car changed hands among private dealers until 1974, when Leach met its then-owner in a workshop in Huddersfield, Yorkshire.

Upon closer inspection, Leach was surprised to find the car in remarkably good condition despite the disassembled engine and missing bonnet. Impressed by its quality, he purchased it and entrusted Lynx Engineering in Rye, Sussex to make it roadworthy. Leach’s exposé elaborated on the challenges of getting the car operational, its participation in several races, and detailed descriptions of its construction. Notably, he praised the exceptional craftsmanship of the internal and external aluminum work, reminiscent of aircraft manufacturing standards. Every internal panel was precisely shaped and riveted in place, with the underside covered by a riveted undershield. The car’s edges showcased exquisite rolling and wiring, showcasing de Havilland’s advanced construction techniques. According to Leach:

The thing that impresses me most about it is the internal and external aluminum work, carried out to the extremely high standard one would expect in an aircraft manufacturing company. Unlike most Elevens, every internal panel is boxed and shaped to perform its particular function and then beautifully riveted in place. The whole of the underneath is totally enclosed in the riveted undershield, save a very small hole for the sump. The edges of this undershield are beautifully rolled and wired, and they still bear the original aircraft marking for the individual panels.

The Gullwing Exposé, by Rod Leach, 1974.

Leach drew a connection between the aluminum bodywork and the De Havilland aircraft factory, emphasizing their shared commitment to high standards. It is plausible that the car was constructed by apprentices at the factory during their off-time, although it was never conclusively proven. In the preface to The Gullwing Exposé, Victor Thomas (2003) mentioned Leach attributing the design and construction to Frank Costin, the original Lotus Eleven designer. However, Thomas noted that he failed to find anyone who could offer a firsthand account of the car’s history. Despite speaking with Frank Costin, no recollection of working on the car could be confirmed.

The mystery deepens, as Thomas states in the preface:

Two other sister cars were mentioned, but there have never been any signs of these. It was suggested to Rod that the GT Eleven was commissioned with the intention of it being raced at Le Mans.

Preface to The Gullwing Exposé, Victor Thomas, 2003

Could this elusive coupe have been part of an abandoned Le Mans program involving Lotus, Costin, and the de Havilland Aircraft Company? If so, why was development abruptly halted?

A Stillborn Le Mans Prototype? Or, a Special Construction for a Wealthy Customer?

Author’s Note: The following is pure speculation based on Rod Leach’s account, my observations of the car’s design and construction, and Lotus’ Le Mans racing history. I present a few theories regarding the car’s purpose and the reasons behind its abandonment.

Team Lotus last outing at Le Mans was in 1962. After enduring unfair treatment from the Automobile Club de l’Ouest regarding the Lotus 23 race car, Lotus withdrew from Le Mans. Victor Thomas described the Gullwing Exposé’s car as “a very pretty Gullwing Coupe fitted to an otherwise conventional Series II body.” Assuming the Lotus Eleven Gullwing Coupe was based on the Series II model, it must have been built between 1957 and 1962, before Lotus’ exit from endurance racing. Could this coupe have been intended as a sister car to the Lotus Eleven race cars, featuring gullwing doors, a removable rear window, and even a pigskin leather interior with a cigarette lighter? Although it seems peculiar for a race car to have a functioning cigarette lighter, smoking was more commonplace and accepted during that era. Hence, my theory:

The Lotus Eleven Gullwing Coupe was a “Privateer Special.”

Privateer racing has been prevalent in the history of motorsports, wherein private racing teams acquire older factory race cars and compete independently. Some private teams even received limited factory support. While the Lotus Elevens remained competitive, rival vehicles were becoming faster. Lotus needed funds for developing new race cars. Is it possible that a wealthy race car driver commissioned the Gullwing Coupe project?

The preface to the Lotus Eleven exposé hinted at the car’s potential commission by a private party for participation in Le Mans. It is also conceivable that two additional sister cars were commissioned, although no evidence has surfaced to confirm their existence. The confusion might have arisen from other Lotus Eleven GTs racing during that period, including the “Breadvan” Eleven GT.

The presence of a more refined interior suggests the car was intended for road use. It was not uncommon for racers to drive their cars to the track and back home after a day of racing. Could the Eleven Gullwing Coupe have been designed for this purpose? Unfortunately, the car’s origins and builders remain shrouded in mystery, as no documentation or surviving individuals associated with its construction have come to light.

Nevertheless, a question lingers: Why was development ultimately abandoned?

The ex-Normand Racing Lotus 23B made its first appearance in South East Asia in January 1964. © Rewind-Media 2022

Reasons for Abandonment

Multiple possibilities exist for why the development of the Lotus Eleven Gullwing Coupe was halted. The simplest explanation could be that Lotus had already progressed to building faster race cars, prompting the private party involved to withdraw from the project and purchase one of the swifter models. The presence of the iconic Ford Cortina taillights, which suggest a production timeframe around 1962, coincides with Lotus racing and selling the Lotus 23B to privateers. Perhaps the private party redirected their investment toward the 23B instead of the Gullwing Coupe?

Another possibility is that the car was initially intended for a private individual who withdrew from the project, prompting Colin Chapman to consider completing the car for sale. This scenario might explain why the car was discovered unfinished at the old de Havilland factory. Once again, the Cortina taillights could provide insight into when the car was constructed and why its development was abandoned. In 1962, Lotus withdrew from endurance racing due to its strained relationship with the Automobile Club de l’Ouest regarding the Lotus 23B at Le Mans. If the Lotus Eleven Gullwing Coupe was being built during the same period, its abandonment might have resulted from Lotus’ shift of focus to Grand Prix racing.

The last possibility I consider is that the Lotus Eleven Gullwing Coupe represented an “evolution” of the Lotus Eleven GTs, optimized for road use and potentially offered for purchase directly from the factory. The inclusion of road-legal components like the Ford Cortina taillights and creature comforts such as the radio and cigarette lighter supports this notion. Lotus’ decision to withdraw from endurance racing after 1962 could have resulted in this car becoming an unfortunate casualty.

The Lotus Eleven Gullwing Coupe sitting among other notable race cars, including the Lotus 23B and the Lotus 2-Eleven. Image found on Twitter.

A mystery that may never be solved

Regrettably, the origins, purpose, and builders of the Lotus Eleven Gullwing Coupe may remain forever obscured. However, the car’s existence is a source of delight. With its timeless aesthetics and polished aluminum finish, the Gullwing Coupe is undeniably captivating. The fact that someone discovered this abandoned race car and completed its construction speaks to the enduring enigma surrounding the car and Lotus’ expertise as a race car manufacturer. The Lotus Eleven Gullwing Coupe, gullwing doors and all awaits the day when new information may emerge, bringing us closer to unraveling its mystery.

The Final Word on the Eco-Racer

In my last post, I shared my recent discovery about the Eco-Racer and its true heritage. Originally, I believed the Eco-Racer was Osaka Sangyo University’s ENE-1 GP racer from 2011 to 2017. However, I took a closer look. I discovered these were actually separate vehicles! The ENE-1 GP racer had several differences in its construction compared to what I had. This included a different design for it’s canopy and tail cowling, and a different steering system. This led me to believe that my car was either an earlier prototype, or possibly the earliest version of the ENE-1 GP racer from 2011. I concluded that post by mentioning that I had reached out to the University for more clarification. All that was left to do was to wait for an answer. Well, I’m happy to say that answer came! Here it is; the final word on the Eco-Racer!

An Early Morning Email

I awoke to an email in my inbox with a Japanese email address. Upon inspection, I discovered the email was from a gentlemen named Takashi Sudo. If that name doesn’t sound familiar, maybe this picture would provide a clue:

Takashi Sudo is one of the designers, builders, and the actual driver of OSU’s Panasonic Oxyride Race Car from 2007! This car was built by the university in an attempt to set the speed record for a AA battery-powered car. They succeeded, and made it into the 2007 Guinness Book of World Records for setting a speed of 65.83 mph!

In his email, he very kindly explained to me that the he was one of the people that worked on my car! In fact, he was a teacher during the duration of the project. According to him, my car is in fact a sister car built by a team of interns from Stanford University studying carbon fiber reinforced plastics manufacturing in 2009! This means that my car and the ENE-1 GP Racer were both made at the same time in the summer of 2009!

This picture was attached to the email sent to me by Takashi Sudo. This is the CAD model showing the original design of the Eco-Racer

Takashi Sudo went on to explain that he was the person who helped design and manufacture my car. He participated in the ENE-1 GP, and can be seen in the photos I shared working on the ENE-1 GP car at Twin Ring Motegi. In my last email exchange, he stated he was currently making a smaller car to compete in the next ENE-1 GP.

This picture was attached to Takashi Sudo’s email. Here he is kneeling next to the ENE-1 GP racer in 2013!

Here is the original email in its entirety below:

Dear Mr.Wayne

Nice to meet you. This is Takashi Sudo.
At that time, I designed and manufactured the car in the photo at Osaka 
Sangyo University.
sorry. Since I am using translation software, the text may be strange.

Thank you for researching the cars we made.
This car was specially designed for students who came to an internship 
from Stanford University in 2009 to learn about CFRP in a group called 
New Energy Vehicle Project, Osaka Sangyo University when I was just a 
teacher at that time. ..

At first I participated in the battery competition Ene-1GP to compete 
for the ranking, but it is so big for us to ride, so now I am making a 
small car and participating, and now I am a driver I am participating as 
a practice car. There used to be a lot of photos, but my computer broke and there are almost no photos left. sorry

For inquiries about electric vehicles
Also, when I was a student, I made and rode an Oxyride Battery Vehicle.
Now that I’m away from my teacher’s job and working as a clerk at Osaka 
Sangyo University, it’s difficult to make a new car, but I’ll be 
participating in the 2021 Ene-1GP!

If you have any questions, please contact us.

Thank you

– Takashi Sudo

I couldn’t believe it! Here was definitive proof of the history of the car straight from the source! But, I still had a lot of questions. If my car was the sister car to the ENE-1 GP racer, then why were there differences in the canopy design and the steering system? Also, I wanted to know if my car raced as the previous owners once stated, and what was used for the original power source. I wrote another email to Takashi Sudo (with translation from English to Japanese) with the hopes of gaining a clearer insight into my car.

The “Super-Sanda”

Takashi Sudo replied to my second email and provided much needed insight into the design of my car. Originally, the OSU car was developed for a race series called the “World Econo Move GP”; a race series similar to the ENE-1 GP in which electric cars powered by 2-4 motorcycle batteries competed for endurance. According to Takashi Sudo, the first race the car attended was at the Eco Car Festa 2009 for the 4th round of the 2009 World Econo Move GP. From what I was able to gather, this race was held at Sportsland Ikoma between September 22nd and 23rd. Unfortunately, I couldn’t find pictures of the car at the race, but did find a photo of the participants of the race, as well as the practice, qualifying, and race results. The OSU race car was listed as car No.9 “Super-Sanda”, and placed 10th overall with 47 laps completed!

A wallpaper of the participants in the Eco Car Festa 2009, provided by Taisei Techno.

Takashi Sudo went on to explain that while the OSU “Super-Sanda” was designed for the World Econo Move GP, its sister car was the car developed at the same time by the student intern team from Stanford University. The Stanford car was designed and built using the same molds that were used for the Super-Sanda, but with slight differences in its construction that set it apart from the original car. So why were there differences in the design of the Stanford car and the Super-Sanda?

The Stanford Car

This photo was attached to one of Takashi Sudo’s emails. This is actually the car I now own, without the Stanford decals!

Takashi Sudo explained in his email that the he had designed and built both cars in the same shape in order to make the manufacturing process more simple. Both cars were actually completed at the same time, but, Takashi Sudo and the students decided to utilize different concepts for each car. For easier clarification, I’ll be referring to The Stanford University Car as #1, and the OSU Car as #2.

The most notable difference between the cars were the design of the canopies and bulkheads. #1 utilizes a two-piece canopy and tail cowl, whereas #2 uses one solid piece. Takashi Sudo explained that car #1 was designed so that less people were needed to carry the canopy and service the car. This meant that a smaller team could use the car at events. The bulkhead of #1 was also designed to not only position the canopy and the tail cowl for better airflow, but also acted as a built in rollbar to protect the driver in case of a rollover. Car #2’s canopy was designed for ease of access of vital equipment, and to be more aerodynamic. Because #2 was used as a research car, the team needed to access the testing equipment more quickly.

Both cars side-by-side! You can see the Stanford car I now own off to the left with the stickers on it! here you can clearly see the differences between my car and OSU’s car!

As for the differences in the steering system, Takashi Sudo provided enlightenment. Both cars use a slightly different steering system from each other. In car #2, the steering system was developed to resemble the steering system in a typical car. This in theory made it simple to operate, as it would operate just like a road car. However, Takashi Sudo had difficulties keeping the car straight with this type of steering because his arms would float in the air during operation. So when the steering system in car #1 was designed, it more resembled the steering system for a motorcycle. The mechanisms were also slightly lowered as opposed to car #2. This made it so that the arms would be extended and resting on the driver’s abdomen during operation, which made it easier to keep the car straight when in motion.

In other words, car #1 (the Eco-Racer) has a small set of improvements over the original car. I have yet to take the Eco-Racer out for a test drive, so we’ll have to see how easy it is to steer!

The Final Word

The OSU car appears in this educational video from NHK.

While both cars were developed and completed around the same time, only the OSU car was used for racing. Takashi Sudo explained that the Eco-Racer was sent to the United States upon completion of the project. It would eventually end up in the hands of one of the students that worked on the Eco-Racer, and ultimately into my own hands. As for the OSU car; it was used for various events and demonstrations, including participating in the ENE-1 GP. As of now, the original OSU car is no longer being used for demonstrations as far as I can tell.

When I became the owner of the Eco-Racer, I only had a vague idea of where it came from based on what I was told. Little did I know, I would embark on an incredible journey rediscovering the history of this brilliant machine! In my last email to Takashi Sudo, I had asked him to kindly share our email exchange with the university so that anyone else who might have been involved with the project would be able to share their experiences. While it’s unfortunate that Takashi Sudo’s records of the both vehicles were lost, but perhaps someone else may have something? Maybe they’ll be excited to see the Eco-Racer alive and well in the USA!

Right now, the Eco-Racer is currently sitting in storage as I’m going to be moving to a new location soon. But, as soon as I’m settled, I’m getting this thing back on the road again!


A very special thanks to Takashi Sudo for reaching out to me and revealing the history of this car! I am looking forward to hearing more from you my friend!

-W

1 Slide

UPDATE: Is the Eco Racer a prototype?

Something is a little off.

Yesterday, I posted an update on the origins of the Eco Racer, and how I found out that my car might have been the same car Osaka Sangyo University built to race in the ENE-1 GP! I’m super excited to find the heritage of this machine! But, after doing some more research, I’m starting to think this might not be the same car at all. In fact, I think it’s something even more special. Is the Eco Racer a prototype?

The evidence

The image above was the biggest clue to the true origin of the Eco Racer. While all the cars that raced in the ENE-1 GP’s KV-1 class are similar to this one, this car and the car I have are a little different. Although both of the cars look exactly the same, the canopy in this car is a one-piece canopy. However, the canopy used in my car ends at the bulkhead for the engine compartment. The tail section is also it’s own separate piece.

Also, if you look closely at the racer in the 2013 picture, some of the internal structures are different. In my car, the steering linkages are placed lower than the top of the front wheels. In the pic from 2013, the linkages are higher than the tops of the wheels. The linkage geometry is also different.

The placement of the steering linkages in the 2013 picture looks like it could be a revision of the system from my car. The higher placement would make for a little more legroom, and it could also affect steering. With this and the one piece canopy in mind, you can see the difference between my car and the race car in this video from the 2014 ENE-1 GP at 12:58 and 22:10:

Other than these glaring differences, both cars are extremely similar in design. In fact, I believe the bodies could have been pulled from the same mold. Which begs the question:

What exactly do I have?

Two possible answers

There are two possible answers for the true origins of my car. The first answer is the most obvious: I have a proof-of-concept prototype that was tested and evaluated before the actual race car was built. In other words, I have the test mule for the ENE-1 GP racer, and not the actual car. While this is disappointing, it is also very intriguing. In most cases, prototypes like this are either destroyed or kept in a museum or private collection. Seeing as this car was kept by a private individual, this could very well be the case!

The second possibility is more exciting. In my last post I mentioned that I had possible video evidence of the car taken during the commemorative photo session for the inaugural ENE-1 GP in 2011. I found more videos of an extremely similar looking car at 04:28 thanks to the same source!:

The video in question shows the 1st Attack session for the KV-40 Class at the 2011 ENE-1 GP. In the timestamp above, a car with the same exact shape of the OSU car can be seen in still images, with less markings on the body than the later cars. Unfortunately I can’t find much else on the 2011 ENE-1 GP or this car. Could it be possible that this is my car? Do I actually have the KV-40 car from the 2011 ENE-1 GP? Who knows?

The likeliest scenario…and some answers

In all likelihood, I have a very early version of the KV-40 race car for testing purposes. A prototype for a prototype even. This corroborates the story I’ve been told so far, since the original owner stated that the car was built as early as 2009. As I look further into the details, more questions are being raised. If this is the prototype for the KV-40 car, then where are the records for it? Shouldn’t there be some documentation somewhere showing how this car was built?

Suffice to say, it looks like this mystery isn’t solved at all. However, I am extremely close to solving it! I now know that this car and its possible sister car was built for the KV-40 class. This class was unique, as it was sponsored by Panasonic and the cars used a 40 AA battery rechargeable power cell. According to this new research, this car was competing in this class and not the KV-1 class I thought earlier. This also could explain why the battery pack was replaced with two 18-volt scooter batteries. Perhaps the original battery pack was taken out of this car and put into the racer?

What next?

Before writing this post, I actually managed to write an inquiry to Osaka Sangyo University (see my Instagram) requesting verification of what I had. Of course when I wrote it, I believed I had the actual racer and not a possible prototype. Either way, I hope that my inquiry will be answered as I could finally have the final word on what I actually have!

But, there is also the possibility that I may not get an answer at all. Whatever happens, I’m still very certain that Osaka Sangyo University did build this car! I just have to wait and see!