At about 10 years old, me and my two younger brothers road coaster wagons down a long and steep pasture hill through a lot of trees, having to crash rather than go over the bank and into the river. It was a blast! Tore the front wheels off three wagons that day. Never forgot the thrill!
If you are only counting vehicles, i got a fast ride in a 1967 442, and got to drive it! Fall of 1966, i was 16 and driving a flathead Ford Vicky. A bit of a step up!