Who is known as Mr Road Racing?

Answer 1

I couldn't find the answer, but in Nascar, this might give you a hint:

The NASCAR road courses always bring into discussion just who the best road racer in NASCAR is. Immediately, the first two names to roll off of the tongue are Jeff Gordon and Tony Stewart (with a combined 15 wins on the tracks that go right and left). From there, the attention usually shifts the "ringers" (Ron Fellows and Boris Said) or even to "in-series ringers" (Robby Gordon and Juan Pablo Montoya).