Might be a stronger argument if not for the way many people drive. All the time, money, and effort spent to learn how to drive properly, and we still end up with apparent chaos on the roads. Obviously, people need to learn these things, but we typically don't stack new laws on top of the existing ones with driving because it quickly becomes a case of diminishing returns; people who don't care about acting in a disciplined manner can quite quickly "forget" how to.