Entrepreneur and inventor Elon Musk is almost like a real life Tony Stark from Iron Man. He always seems to be coming up with brand new technology that sounds like it belongs in science-fiction.
Musk has already given us Tesla electric cars, PayPal, SpaceX and the original concept for Solar City, but his new ideas might be even more impressive.
He recently visited the Colbert Report and talked about a radical new idea for airplanes.
In the interview, he talks about his idea for an electric jet that can take off and land vertically. These jets would use an electric motor to drive an open fan. They wouldn't be quite as quick as airplanes we're used to, but they'd be a lot more efficient. An idea like that could really change air travel by lowering fuel costs.