Abstract: This device generates electricity when a vehicle tire rolls over a platform containing a cylindrical roller that spins. Friction causes a vehicle tire to roll the cylinder. The spinning roller drives gears of an overdrive transfer box. The output of the overdrive box is a spinning shaft. The spinning shaft turns a differential, which drives a time-gear set. The time-gear set establishes the timing of a spinning shaft from the time-gear set and drives a motor generator suitable to supply electricity to an electric utility grid. To facilitate maintenance of the electrical generating system, brakes are utilized to hold fast the time-gear set; magnets hold fast the cylindrical roller; and a pin can lock the overdrive shaft.