The Dymaxion concept, developed by Buckminster Fuller, is a design philosophy emphasizing maximum efficiency with minimal resources, encapsulated in the term "dymaxion" (dynamic + maximum + ion). It was applied to various innovative projects in the 1920s–1940s. The Dymaxion car was a three-wheeled, aerodynamic vehicle with a rear engine, capable of 90 mph and 30 mpg. It could carry up to 11 passengers and turn in its own length but was unstable; only three prototypes were made, with one surviving. The car had a lightweight, aluminum chassis with a teardrop-shaped, aerodynamic body to reduce air resistance. It was approximately 20 feet long, resembling a small bus. Powered by a rear-mounted Ford V8 engine (85 horsepower), it used two front wheels for drive and a single rear wheel for steering, allowing an exceptionally tight turning radius—capable of turning within its own length or even pivoting in place. This made it highly maneuverable but also contributed to instability