Abstract: A wheeled toy having an inertia type flywheel to drive at least one wheel to propel the toy along a surface after applied force has pushed the toy along a surface sufficient to store kinetic energy in the flywheel, the toy including in the body thereof an electric generating device also driven by said flywheel to activate an auxiliary electrical device on said toy, such as a sounding device, electric light bulb to illuminate the same, or otherwise. The toy also includes a commutator operable to effect intermittent actuation of the auxiliary electric device and thereby cause flashing of the electric bulb when said auxiliary device is an electric bulb.