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Designed in the 1970’s in California (USA) by Subaru of America (possibly by Alex Tremulis) with the Vehicle Research Institute (VRI). The Subaru X was an experimental prototype capable of 100 mpg. The vehicle, a single seater, was tested in Japan by a female Japanese racing driver where it achieved 100 mpg. It was also tested at the Ontario Motor Speedway in 1980 where it is reported to have achieved 100.2mpg using a 544cc 2-cylinder, 4-stroke engine.
The vehicle is still owned by Subaru.
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