Abstract: A portable platform is formed of a plurality of elongated floor support members interconnected longitudinally and spaced apart laterally, the support members having a plurality of longitudinally spaced cross members, the confronting cross members being secured in alignment by interengaging coupling members and the laterally spaced floor support members being secured against lateral displacement by a plurality of elongated locking members interengaging adjacent pairs of support members. A plurality of elongated floor members are supported on the foregoing assembly and are secured together releasably along their longitudinal edges.

Abstract: A bumper car amusement ride includes a floor to which is adhesively bonded over their entire under surfaces a plurality of elongated electrically conductive plates separated by electrically non-conductive strips and with adjacent plates connected across a source of alternating current. A bumper car is supported for movement over the plates and strips by a pair of laterally spaced drive wheels and a pair of longitudinally spaced caster wheels, each of the drive wheels being coupled to the reversible, variable speed output of a hydrostatic transmission, the inputs of which are both coupled to the output of a direct current constant speed electric motor. The motor is connected through a rectifier to a plurality of contacts mounted on the car for sliding engagement with the floor plates.