Isetta

The Isetta was a subcompact car marketed by BMW in the fifties and sixties. It was noted for its large front door. Small cars were popular in Europe as a way to avoid certain taxes by making cars which could be classified as motorcycles, and also to have cars which would fit through Europe's narrow streets.

Gaming
The Isetta was just added to racing video game Forza Motorsport 6 as part of a download content pack.