So Uber is mostly skipping the car part, instead making a plane that takes off and lands like a helicopter, and designing it to fly from helipads. Helicopters--an existing, proven technology--already meet most of the needs for Uber’s planned flying machine, but they’re too slow for the commuter flights of 20 minutes or less that Uber wants from urban hubs to residential suburbs (or the downtown hubs of suburban areas). To meet this, Uber wants an aircraft that can fly between 150 mph and 200 mph. That's speedier than all but the most cutting edge military helicopters, but within the range of VTOL aircraft--which is why Uber wants it to switch to flying like a plane once it's off the ground. On top of all that, the company wants the vehicle to be all-electric, to keep down noise and emissions.