It uses 8 motors and claims to be fail-safe with 1 motor failing.
I wonder how long it flies for. Most drone-type things can’t get above 20 mins or so.
Continue reading after the headline for 2 sentences… 
The prototype, powered by rechargeable lithium polymer batteries, can fly for only about three minutes. The commercial system later this year will be good for 15 to 20 minutes, according to Reichert. Recharge will take about two hours.
Here it is again – funded by google money
https://www.aopa.org/news-and-media/all-news/2018/march/14/self-flying-taxi-takes-flight
How will it handle:
2 or more engine failures
Icing condx
Failure in one or more sensors (pitot tube, static etc)
Kitty Hawk Cora flies on Youtube:
Not very fast, 150km/h and modest 100km battery range. Not very sleek looking wing motor mounts. But looks like a good start.
