A motor vehicle includes two wheel and axle sets, one in front and one in the rear, at least one of which is driven and at least one of which steers. The power to the vehicle is assured by an on-board source of electrical energy. Each wheel of each driven set is equipped with an electrical back-geared...http://www.google.es/patents/US5004061?utm_source=gb-gplus-sharePatente US5004061 - Electrically powered motor vehicle
