I think my brother had a subscription to Quest magazine that had all manner of forecasts and predictions and I remember it having an article about a flying capsule that was part of a car that would fly away from an accident and avoid the accident. It was utter nonsense.

Tomorrow's World on the BBC also was chock full of this.

And Back To The Future II was set in the future (which is now our past) and had flying cars.

I think people are a bit over-optimistic, wanting flying cars for no known reason. People can't manage in 2 dimensions (x and y) so why on earth you'd give them the z dimension too and expect them to get it right is beyond me.