I was racing against Cam Waters in Karts 3 years ago..
most (Australian) drivers stay in karts till they’re 16, 17 or 18 years old.. then move up to Formula Ford or Formula Vee.
Cam moved straight to Formula Vee when he was 15, did half a season then moved straight up to the Formula Ford National series..
The Show advertises “12 Rookies fighting for a V8Supercar seat”. Cam’s not a Rookie, and neither is any of the other drivers on the Show.. All of them have a seat in a major Australian racing series, and in the case of Cam Waters (and Nick Foster, etc), they’re already on the road to V8Supercars.. Without the TV show, Cam will probably be racing in V8′s in a year or so anyway..
Anyway, back to the topic! I firmly believe that 17 Years old is about the Minimum Age for a Driver (risk management, etc).. but as long as the 17 Year old has enough experience racing automobiles, he should be fine..
In the case of Cam Waters, He’d been racing Karts for 7 Years (and doing pretty well!) before starting Cars, Raced Formula Vee for 6 Months, then Australian Formula Ford for 18 Months.. He’s fast, and he’s got enough experience in my opinion