I think the only way flying cars will work is if humans are taken out of the equation as much as possible.

Robot flying cars would still be awful. The car noise and pollution is already insufferable, now bring it overhead. And the fallout of an accident are already grotesque, now multiply this by 9,81.

Flying cars are a fetish: because they are futuristic technology, therefore they are desirable. That is the motive force behind them.