it as having very poor stability and vehicle control. See also Streamliner: Automobiles for overview of early aerodynamic automobiles Flying cars Early "teardrop" cars, chronologically Rumpler Tropfenwagen (1921), first aerodynamic "teardrop" car to be designed and serially produced (about 100 units built) Persu car (1922–1923), designed by Romanian engineer Aurel Persu, improved on the Tropfenwagen by placing the wheels inside the car body Stout Scarab (1932–1935, 1946), US Schlörwagen (1939), German prototype, never produced References Further reading External links , excerpt from the Robert Snyder film, The World of Buckminster Fuller, 1971 , with Amelia Earhart as passenger The Dymaxion Car – The Futuristic Vehicle That Remains in the Future CFD Analysis of Dymaxion Car Buckminster Fuller Concept cars Three-wheeled motor vehicles Rear-engined, front-wheel-drive vehicles