While some buyers could afford the other luxurious options on this list, others on a budget would have to spring for "bubble cars" like this. This European mite sold over 160,000 units despite its one-cylinder engine, and record-narrowest "rear" of the car - at a ridiculous 20.5" wide.

Answer Isetta

The Isetta was produced under license in seven countries, most notably in Germany by BMW. In 1955, it could travel 78 miles on a single gallon of gas.

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