The fastest street legal car ever made was the 1988 callaway corvette sledgehammer twin turbo. It had a top speed of 255 mph. That's two miles an hour faster than the
Bugatti Veyron. The Koenisseg ccr had a top speed of about 242 mph, which is about two miles an hour faster than the Mclaren f1. Oh, and the callaway corvette weighed over 3000 lbs, and "only" had 898 hp, whereas the
Veyron has over 1,000 and it weighs much less than 3000 lbs.