I don't think it's necessarily a bad thing (that I survived my teen driving years is entirely out of luck) but when we've built up a culture (suburbia) entirely dependent on being able to drive from point to point, we can't be surprised that making it more difficult to drive turns teens and 20 somethings off from staying in that culture.

If you can't drive or your driving is restricted as a matter of law, would you rather be stuck in suburbia or in a more urban area where mass–transit or cycling is possible?