US Patent 10335700 Tube racer track system

A plurality of toy vehicles can race together in a track set. The track system comprises of different types of plastic tubes, toy vehicles and transmitter. The toy tube can be in different shapes such as straight type, curved type, X-type, Y-type and open-type. The tubes can be assembled by end users with simply snapping two symmetrical half tubes together. The vehicle has a drive wheel resiliently urged towards an inner surface of the tube for moving frictionally along the inner surface.