Elon Musk’s Inventions Changing the World.

Musk hasn’t officially started working on this project, but last year at MIT’s Aeronautics and Astronautics Centennial Symposium, he said he was “toying” with the concept. Musk also has mused on The Colbert Report about the opportunity to have a “vertical takeoff and landing electric supersonic jet,” which uses electric motors to drive a fan, which in turn propels the aircraft. It would not require a long runway, so airports could be smaller.