Side note: why would we even want a flying car?
Cars are adapted to driving. They’re good for driving. But there’s no reason to use the same design for flying.
Do we travel the highways in speedboats on wheels?
Meanwhile we already have airplanes, we have helicopters, we have jet packs, we have hovercraft and we have blimps. Why would it be so great to have a flying vehicle that looks like a car? What’s the point?
I can see the appeal of a flying vehicle as compact and easy to come by as a car, but there’s a good reason why helicopters and jet packs can’t fulfil that function, a reason that flying cars won’t overcome either. Flying is just expensive as heck. You think the gas prices are bad now? Imagine how much of the stuff you’d need to create enough lift to keep all that weight airborne.
Maybe if someone ever invents a cheap way to create lift, some vehicle will hit the commercial shelves that allows everyone to fly. But it probably won’t look much like a car at all. It would be more effective to design it in a completely different shape that looks nothing like anything we already know.
Flying cars are just an old trope of sci-fi writers who lack the imagination to truly think beyond their own time.