The Dymaxion Car
Richard Buckminster Fuller set up the Dymaxion Corporation where he became both director and chief engineer. The corporation was set up to develop and manufacture three streamlined prototype cars that were based on his Dymaxion design. The Dymaxion was inspired by aircraft designs at the time.
The image below shows the Dymaxion.
Fuller claimed that the Dymaxion of 1934 could accelerate from 0 to 60 miles per hour in three seconds and had a fuel consumption of 30 miles per gallon.
Unfortunately the prototype car was never manufactured as it proved to have serious design flaws.