Beautifully simple that it only has to spin the wheels one direction! I do imagine it has to stop though when the person stops walking. The drawback of this i

Beautifully simple that it only has to spin the wheels one direction! I do imagine it has to stop though when the person stops walking. The drawback of this is that it requires a firm contact point like shoes to work. You wouldn't want to walk in socks on this. You also couldn't have a performer lay directly on the surface and transport them across the stage, nor allow them to have baggy clothing near it. Running would be difficult from a balance perspective, not to mention holding a wheel at a particular tilt would require quite a bit of force if someone runs on it. It's going to have a very particular use case for Disney.