Gerbiling

Oh for the days of crazy inventions, largely lost now in the swamps of corporate caution. Mind you the Dynasphere's basic problem should have been obvious. From Wikipedia

According to the 2007 book Crazy Cars, one reason the Dynasphere did not succeed was that "while the [vehicle] could move along just fine, it was almost impossible to steer or brake." Another aspect of the vehicle that received criticism was the phenomenon of "gerbiling"—the tendency when accelerating or braking the vehicle for the independent housing holding the driver within the monowheel to spin within the moving structure.