Yeah that’s true, instead of small diameter wide rollers, you could have large diameter narrow rollers, like for example bicycle wheels or scooter wheels. Actually you could even use tracks for the rollers, which might be an interesting innovation. That would increase friction and reduce battery life, but there may be some advantages. Of course it would be very complex mechanically!
But something made with scooter wheels could be used to navigate around a city for example. That might be interesting.
But something made with scooter wheels could be used to navigate around a city for example. That might be interesting.