important factor, maturity is. I know 30 yr olds who act like 2 yr olds behind the wheel. I would have killesd myself at 16-20 in the Z. But that was because like many young people,I was 20 ft tall and bullet proof. maturity and respect for the dangers of speed is the main issue. There are many young racers who can handle more power than most any Z has. It is all in the head, and using it to make good decisions.