I was talking with a friend recently about flying cars. They were supposed to be here by now. Every now and then you hear that some company has a prototype and it may happen soon. My friend pointed out that to operate one of those you would basically need a simple version of a pilots license with training. This would actually make driving (at least the flying cars) limited only to those smart enough to get the pilots license. Everyone else would use the mass transit piloted by someone with the license.
At least then if you were driving a flying car, you would know that most the people flying one near you had to be at least smarter than the people driving regular cars.