It wasn't especially powerful, with a 1.5-liter inline-four cylinder engine producing 108 horsepower and 97 pound-feet of torque, and it wasn't exactly appealing to the eye. But it's when you open its two doors that the real fun begins. The Sera didn't have conventional doors; instead, it had butterfly doors that opened forward from the top-center of the windscreen and the bottom of the A-pillar, close to the Saleen S7 and McLaren F1. ¹⁾

The Chevrolet Super Sport Roadster (SSR) is a convertible pickup truck with a retractable hardtop. Are you perplexed? You weren't the only one who felt this way. Between 2003 and 2006, Chevrolet manufactured the SSR. Chevrolet didn't help matters by looking like a jumble of different body types tossed together. ²⁾