https://www.aliexpress.com/item/1000w-m ... 31512.html.
hmmmmmm?! an interesting thought..... there are a lot of interesting one wheel designs. looks like they are continually improving them. more fun than a barrel of monkeys. cheap enough to play with. no problems with narrow hallways( maybe) we need some people to try these as a wheelchair this is too good to miss if it works.