My biggest concern when I saw this originally was the emergency braking scenario. Which basically involves doing a face plant and using your nose and forehead to slow you down by embedding it in the floor.

One of the selling points mentioned in the article is, "you can jump forward off the bike in a crisis; there’s no hardware in your way". Which seems strange as every accident I've had or come perilously close to has been hitting something head-on (from the cyclist perspective... such as peds who walk out in front of you, or cars coming out from a side street).

The weirdest thing I find though is just the speed. These things tend to be speed limited as this helps classify them separately from the soon to be coming breed of electric scooters and motorcycles. Obv' electric bike manufacturers do not want to be forced in complying with that set of regulations and all that it entails. But the speed limiting is such that even a commuter on a cheap bike is going to be going the same speed, and a fit commuter will achieve a higher average speed than someone on this thing.