dan simmons has been looking up.abs will get stuck in jams, so this is uber‘s vision. when you're tight for time, go by air. it's ambitious and so is the time scale. our goal is by 2020 to launch our first demonstrator flights in dallas and la to show that, as a concept, this can work, and then work to scale by 2023 and 2025, so we're providing commercial flights to a lot of our riders, giving them a new way to travel. one of uber‘s partners, bell helicopters, has showed off its design for a four—seater cabin, which could include a pilot. here's their 360—view, with the alternative set—up — four seats, four passengers. the aircraft, like our cars, would navigate automatically. it's electric with a range of about 60 miles, they say. we've seen other designs for air taxis of late, including this chinese firm ehang's 184, which recently shuttled actual people in this autopiloted drone. and this air cab by german firm volocopter, which uses 18 rotors and nine separate battery packs, just in case. while nasa and the faa a