Despite being famously panned by Ralph Nader in his book, "Unsafe At Any Speed," Chevrolet managed to sell tens of thousands of its air-cooled VW Beetle-fighting Corvairs between 1960 and 1969.

Introduced in 1957 as a counterpart to the West German VW Beetle, the East German Trabant was powered by a 600cc 2-cylinder air-cooled 2-stroke engine. While it only had 18 horsepower and produced ...