WHERE ARE ALL THE FLYING CARS?

I just don't get it. Shouldn't we have flying cars by now? When I was watching movies during my more formative years they always implied that by 2010 we would at least have some sort of flying conveyance. I am not expecting that everyone has terminators, laser guns and a vacation spot on the moon, but I did expect cars that could fly. Sure, a few people have been able to build "prototypes", but that's simply slang for "car you will never drive." I am looking to one of the major car companies to stop caring so much about the doggoned environment and start making cars that can fly, or at least drive themselves.