Lamborghini Aventador J
If we tried to sell you a car that's missing both its roof and its front windshield, you probably wouldn't be too enthusiastic — until we told you where it came from. The Lamborghini Aventador J ($TBA) is a street legal open-air racer, with two small wind deflectors in place of a normal windshield, and other weight-reducing, speed-increasing features like the lack of an audio, navigation, or HVAC system, Forged Composite seats with inserts made from "Carbonskin" — a new carbon fiber fabric — the same 700-hp 6.5-liter V12 as its standard stablemate, and copious use of lightweight materials throughout. Oh, and there's only one in existence — so good luck getting your hands on the keys.