Patent ID: 8069793

Claim:
A model train system comprising: a locomotive; wherein said locomotive houses a motor; at least one additional car; wherein said locomotive and at least one additional car have at least one wheel; a track having at least one rail; and a bed supporting said track; wherein said locomotive includes at least one additional drive wheel capable of exerting a force parallel to said track; wherein said locomotive further comprises a sensor and feedback mechanism adapted to detect the direction of travel of the locomotive and to adjust power delivered to the locomotive based at least in part on the direction of travel of the locomotive; wherein said at least one additional car and said locomotive are adapted to be selectively magnetically coupled with said at least one rail, such that said locomotive and said at least one additional car can travel in an inverted configuration along said at least one rail, and such that when travelling in an inverted configuration, the sum of the forces acting on said locomotive and said at least one additional car in the plane orthogonal to the longitudinal axis of said at least one rail is substantially zero.