That's wicked awesome, especially since it never derails. (Darn N-scale trains in the middle of a tunnel...)
Also impressive is that the trains can "remember" exactly how far from the track they started out as, without any kind of sensor feedback or active controls, as well as being able to "hover" sideways from the sides of buildings. I wonder if this technology could feasibly be put to other uses, like taking the linear track and turning it into frictionless bearings?