Here is a creation by none other than Charles Taylor, his third model of the one wheeled vehicle.
Mr. Taylor took a different path when designing is one wheeled vehicle he centered the wheel and built a platform that carried the driver engine steering and all the other components that bounced around the wheel.
Mr. Taylor worked on different versions of this for over 10 years and it seems to actually work.
The vehicle used to gyroscopes one mounted vertically in the other mounted horizontally narrows and also some type of weight balance sensor.
Woody think maybe you could build one of these: watch and see.