Well, okay, free people have the right to travel; no argument there. I'm not so sure they have the right to drive 3K pound cars at 90 mph on the freeway without some basic knowledge of how to drive and which side of the road to drive on.
Do you think the average person is so stupid that they need the government to make them get a license in order for them to learn what they need to know to drive?
I would say that raising a child is something that needs a lot more education and skill than driving, AND is a lot more important to have that skill; and somehow, we manage to survive without the government forcing all mothers to have a license before they give birth to a child.
Knowing how to cook, how to wash clothes, how to make a bed -- these are all also pretty important things. How to clean a wound, how to call for help, how to fix a toilet, how to change a lightbulb without getting electrocuted.
Point is, people learn what they need to know to do what they want to do. My son wanted to play Halo, he learned how to play Halo. My daughter was scared to drive, so she didn't get a permit -- she knows it's dangerous, and that she needs to learn how to do it.
Watch kids go to the go-cart tracks. On their first try, they will ask questions, the guy tells them the rules, tells them how to make the car go, how to stop, how to turn -- and off they go, learning quickly.
Meanwhile, as another freeper pointed out, giving out licenses hasn't stopped us from drivers who have no clue how to merge onto a crowded freeway, how to signal when changing lanes, how to drive a safe distance from each other. We can parallel park!!! We can avoid traffic cones!!!! and we know what the signs mean on the road. Speed Limit - Check. Railroad Xing -- check. Oh, and we can't drive through red lights -- something I think we could figure out pretty quickly.