I want to see motorized high speed unicycles.
Motorized unicycles already exist. The only question is what you consider to be high speed. In fact I have seen at least one You Tube video of motorized unicycles racing on a small road race type track. Not sure what speed they were attaining. As someone who used to ride the old fashioned pedal unicycles in days of yore, there is no way I would try riding one of these.