The Mini was conceived by Alec Issigonis to be the ultimate city car, small in proportions but featuring a groundbreaking platform that made it surprisingly spacious on the inside. It sold in over five million copies and is considered one of the most influential designs ever. So good was BMC's biggest hit that it even made waves in the racing world, both on the rally stages and on the circuits of the world. It is, then, not that surprising that a latter-day Mini with enough mods is capable of putting 500 horsepower to the ground.