Driving schools...have to get the young ones started early. Once they’re big enough to see over the hood is about the right age. Dad started me out on the bumper cars at about six...learned early about the physics of rear end collisions, getting t’boned, uncontrolled spin outs, etc...and whiplash.
;>)
I learned at 13, but then, I grew up in a farming community, where everyone was behind the wheel in the fields. Then there were the drag races on the county roads...