In elementary school, children should be introduced to the bare essentials of vehicular mechanics, say with simple rubber-band powered Lego cars. Over time, increase the sophistication of the science, engineering, and even social aspects of vehicles - eventually building go-carts and learning to drive them as a subset of state driving regulations, and working up to real cars and getting a driver's license. BTW: most jurisdictions only impose driving age limits on public roads; kids certainly are allowed to drive on public property (I've known kids who learned to drive at 14 or earlier).

They should also learn cooking, sewing, carpentry, welding, shooting, fieldcraft, and every other variant of the Boy Scout Handbook and Heinlein's "specialization is for insects" quote. Dang straight they should learn the essential basics of driving early on.