The Ford Gyron debuted at the Detroit Motor Show in 1961 and is among one of many concept cars that Syd mead created.

It had two wheels, so it could be argued that it was more motorcycle than car, but its two passengers would sit side-by-side. When stationary, two legs would extend either side to hold it upright.

When moving, the Gyron used a gyroscope to maintain balance.

Illustration before prototype was made: