It kind of looks like a Toyota Celica that fell off the assembly a little too early, but Peugeot's 20Cup concept that features a mere triad of wheels is a serious road car. The rear wheel steers the car while a turbo-four jointly developed by Peugeot and BMW powers the super trike. It's got about 170 hp and weighs less than 1,100 lbs. You see, I always suspected that fourth wheel was redundant.

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