@tsarstepan,
That video is dumb.
1. We already invented the flying car in terms of a drone type vehicle that could hover in place like a helicopter, and would move via a flight path that is not in the way of planes, and other vehicles like helicopters.
The vehicle would have a landing pad area ( which most likely would be a building to allow landing, housing, and transport of the vehicles. Otherwise a person could also have a big enough back yard, or open spot to land the car if one is available.
You have the money and time you could invent a flying vehicle, as long as it is able to take off like hover craft and land like a hover craft and not inside a street area but a landing pad.
Beyond that at the moment helicopters are the current mode of transport that a flying car would be based on.
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Again we are talking about a drone type vehicle that could take off, land, and transform at will.