wheel 58 may be flat and have a rubberized tread to grip the surface on which the toy vehicle 10 is to be driven in operation as the lever 38 is moved in the forwardly direction of arrow a pulley 34 rotates in the forwardly direction of arrow b to tighten belt run 41 and drive belt run 41 in the forwardly direction of arrow c pulley 36 is thereby driven to rotate in the forwardly direction of arrow d by belt run 41 running in the forwardly direction of arrow c as pulley 36 rotates forwardly it drives shaft 39 and pulley 37 in the forwardly direction of arrow e simultaneously as the lever 28 is moved forwardly belt run 44 is loosened to produce slack therein and a belt slippage of bight 54 on pulley 37 the belt slippage on pulley 37 permits pulley 38 to be driven in the rearwardly direction of arrow f by belt run 42 which is driven in the rearwardly direction of arrow g by pulley 36 as belt slippage occurs on pulley 37 belt run 44 may move in the rearwardly direction of arrow h and belt run 43 may move in the forwardly direction of arrow i as belt 35 slips or is loosened about pulley 37 and bight 54 belt run 41 is tightened and belt 35 is tightened about pulley 36 and bight 48 to transmit a driving force through the belt 35 and apply a driving torque to the drive wheel 57 in the direction of forward rotation as the lever 28 is moved in the rearwardly direction of arrow j pulley 34 rotates in.