Most people would like to have a flying car, not only because its a cool idea, but also because it would be practical. The reason however that you feel a flying car should have been on the market by no, yet it is not is really simple. The idea of a flying car has been around in science fiction for a long time, and if you look at the properties of the them in most movies they all share a wingless design and no visible form of motor. This means, that no matter how small and how portable they can make the wings or engine of a personal aircraft, or the rotors of a helicopter, they will never be able to replicate your image of what a flying car should look like. In order to make a flying car the way we all would really like them to look, and with the properties that we want like vertical takeoff and landing, hovering, quiet, safe and easy to use we need a concept entirely different from what we previously have used make something air born. Since the best ways to archive this so far is already called either helicopter, jet plane or rocket it will take some time to come up with something new.Dont give up on your dream yet though, because there are ideas out there that might allow for this to come true in some not so distant future. Should we ever manage to create room temperature super conductivity for instance, it might be possible to make such a vehicle. Someone have also suggested that we use the Casimir effect that we recently reversed from an attracting to a repelling force, but that might be pseudo science as far as I know, the effect involves short distances at this point atleast. Better still there might be a whole range of ideas and possibilities that i haven't read about. I certainly would like to see one sooner rather then later.