If you're looking for racecar performance for the street (or at least for non-competitive track days), it doesn't get much more direct than the Caparo T1. With "only" 575 horsepower on tap, the lightweight F1-car-for-the-road will rocket to 60 miles per hour in 2.5 seconds and grip the tarmac like nothing else on road or track, all for $400k. But even at that price, Caparo has only sold a handful of T1s. The upcoming T1 Evolution, however, will cost more. Much more.
There are a lot of automakers that throw the term "racecar for the road" around, but few have ever taken the recipe quite as far as the Caparo T1. And now it's coming back in an even more extreme form called the T1 Evolution.