In 1943, a bull named Reventón killed a matador in the ring. Decades later, Lamborghini named its most expensive car after it and built only twenty for the public. The 2008 Reventón borrowed its 6.5-liter V12 and all-wheel-drive chassis from the Murciélago LP640, wrapped it in jet-inspired carbon fiber, and was clocked at 221 mph in real-world testing. Read on to find out what made this rare machine worth $2 million.