When were you bitten by the car bug??
6 or 7... Hot Wheels, model cars. Learned to drive tractors before I was 8 (didn't need to reach the pedals- they had hand clutches and throttles), learned to swear at the same time from my grandpa who was teaching me to drive. By 10 I could sort of drive the "farm car" '47 Plymouth on the dirt farm roads, with wooden blocks wired to the pedals.
My older brother had a '55 Chevy with a straight 6 and three Rochester 2 bbls. on an Offy manifold, and an Isky cam that I became infatuated with and pestered him about incessantly every time he was working on it (which was quite often). It has just been snowballing ever since.