Ha these are all pretty ridiculous looking and impractical devices, especially if you fall off the airwheel going 15mph downhill good luck...
Thanks for posting about the Gauswheel . Initially thought how cool of a new design for motoring around. After watching another clip I noticed the rides seemed to be not be taking advantage of the power until I realized these are not motorized at all. Doh! Well, not completely DOH as this is the "Stand-up E-scooters and E-skateboards" forum.
Two gray mass revolutions more and bingo, why not use the design and motor it up. Use a hub motor in a 14-16 inche wheel. Stuff the batteries just about anywhere and off you go. Fabricating a function unit would be really quite simple. What makes this an easy DIY project is it does not need any sophisticated electronics.
The removable brake handle could easily include a throttle. Better still, ditch the cable altogether and use an RC servo to operate the brake and throttle similar to the controllers on e-boards.?
Being able to use a larger air tire would sure smooth out the ride too.
The trickiest part is setting the proper rake on the front steer wheel. This is critical to the steering behavior. Make proto allow for adjustable rake, maybe that might even make the final cut as it would allow a more sensitive steer for slow speed and more dampened when hitting the open road.
Weight - would not weigh more than escooter but likely more than a e-board. I'd think you could do it under 30 lbs. good for say 10k or so distance.
EDITED:
After checking this out more, it seems a design not well suited to power, especially anything offering more than power than a sleight push. The physics do not work. When you power the wheel, the base is going to thrust forward. In order to counteract this moment the body has to move forward sufficiently. This might work with a slow and steady rate of power but it can not be much as you would have to thrust your body so forward to be pretty precarious a position. Then if you had to back off for some reason, you are going to take an immediate face plant as there is nothing for you to brace against to forward momentum. Oh well, back the standard safe and sane two wheel scooter with something to hold onto.

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