Started on a Farmall C about 7 or 8. Started learning to drive a truck about 10, it was a 1976 F100 3 on the tree. Driving on my own at 14. Have an uncle that got a ticket from a State Trooper for driving an old 2.5 ton Dodge dump bed truck hauling grain at 13 or 14 for not having a license. I'm trying to get my almost 15 year old to learn but she really has no interest.
