The big problems are safety and noise. If "flying cars" operated in large numbers in urban and suburban environments are going to become a thing, both need to b

The big problems are safety and noise. If "flying cars" operated in large numbers in urban and suburban environments are going to become a thing, both need to be solved. Best guess, we can solve the safety issue. With enough on-board safety systems, pilot training, appropriate rules of the road, and mandatory transponders, we could make things safe enough. But that still leaves noise. What conceivable propeller or turbine system could lift a thousand pounds while being as quiet as a modern car? Probably none of them.