Angus, you want to driving your kid around town until he's 30?
I'll take him to be tested once he turns 16, just like my mama did for me, but I wouldn't complain if they raised the driving age. My wife didn't get her license till she was 29. She was perfectly fine on buses, subways, and taxis till then. For example, you can walk to a bus stop 500 meters from my crib, take that bus ten minutes to a train station and there board a train for an hour ride to philadelphia. Get off and take a subway from there to the philadelphia international airport. From there you can be anywhere on the globe within 12 hours, provided you have money, a passport, and are willing to remove your shoes and be probed, prodded, and scanned. (Thanks Obama.)
But that's not possible everywhere. My 30k city has no public transportation system.