Our assertions about the toy's structure were mostly correct.  There was a flywheel that stores up energy to make the wheels spin after the initial push.  The pieces also consists of the noise maker that made noise as the wheels spin and the separate pieces make up the car's appearance.  However, there was only one set of gears (one large and one small) that led to the fly wheel.  It is amazing that only one set of gears is enough to spin the flywheel to make the car move.  It must be because the car's structure was pretty hollow and light-weight.