Are you really this stupid?
Serious question, because so many of your replies are like this one, completely ignorant of basic facts and knowledge of the subject.
Hey shit for brains, downdraft is a thing, every pound you lift vertically has to be pushed up by blowing air down. How you blow the air doesn't matter, it takes about the same amount of air per pound to go straight up.
The amount of air you must move to lift a vehicle that actually could carry people FAR exceeds what will ever be allowed in a residential neighborhood. Even 50 feet off the ground, the downdraft is far too severe even for a small 2 person vehicle.
This was an unmanned drone at an airport with big open spaces, it wasn't lifting anything. The "real thing" would not be able to land anywhere useful other than big open spaces.