Even if this turns out to be 100% real, flying cars coming from it seems rather unlikely. The highest amount of thrust they supposedly got from it was 750mN at 2.5KW. Sounds pretty lame compared to an electric motor or jet engine. It might be a world-beater for space propulsion, but unless the efficiency can go up multiple orders of magnitude, it doesn't sound like anybody would bother using it for getting around on Earth.