While it's not my flying car....damn, that is cool
Impact Lab - Microwave-Drill Technology
: "he drill bit is a needle-like antenna that emits intense microwave radiation. The microwaves create a hot spot around the bit, melting or softening the material so that the bit can be pushed in.
But the drill can't bore through everything effectively. Sapphire's melting point, for instance, is too high. And steel conducts heat too well for a hot spot to develop. But the device works fine on rocks and concrete. In fact, the heat may even strengthen holes' walls in ceramics by welding together the fine grains in the material.
To use the drill, workers would have to be shielded from the intense microwave radiation it produces. The inventors claim that a simple shielding plate put in front of the drill bit is enough to meet common safety standards. "