Recently there was a discussion [1] about direct drive hubless motor/wheel combo devices. This isn't that, but has some of the same issues I would be concerned

Recently there was a discussion [1] about direct drive hubless motor/wheel combo devices. This isn't that, but has some of the same issues I would be concerned with as a street e-bike. [1] https://news.ycombinator.com/item?id=42631876 https://news.ycombinator.com/item?id=42631876