Daily Irreverence on Microwave Propulsion: "One big drawback is that the faster these engines go, the less effective they become. That’s why Shawyer wants to use them to make hover-cars, freeing them from the ground while using conventional propulsion to move them."
OMG, YES, LET THIS ONE BE TRUE.
Please please please yes yes please yes now please. I neeeeeeed a hovercar.