This German 21-century masterpiece of engineering comes from the people behind Audi, and carries a mean twin-turbo V8. It's basically a street-legal racecar that's been fitted out with all the luxury trimmings, and it does 0-100 in 3.0 seconds. Unfortunately there won't be any more, since Gumpert went into administration in August last year. Price tag: Around $1 000 000. Buy it if: You're after a supercar with a difference, from a company that no longer exists.