Tesla just revealed their 'flying car' to the screaming of muskbros everywhere. It uses compressed air to bounce the thing around, and can suck itself to the road. It's more of a vacuum cleaner than car, it both sucks and blows. The real world problems with this are going to be enormous, for instance what if you suck up a loose rock on the road and it punctures one of your compressed air lines? So many fun ways to die.