^ I was thinking more of a Personal
rapid transit system. The one in ATL is basically the same as a subway car, with dozens of people in it at any given time. Ideally, a truly personal system would have a car available whenever anyone, even one person at at a time, wanted to use it. Since the whole thing would be controlled by computer anyway (as would any flying car system), it would be intelligent enough to have a car waiting for you when you needed one, and return it to the 'pool' when you're done. No waiting.