The design specifications and the results of the performance and emissions testing are reported for a series Hybrid Electric Vehicle(HEV) which was developed by a team of midshipmen and faculty at the United States Naval Academy. A 5-door Ford Escort Wagon with a manual transmission was converted to a series drive hybrid electric vehicle. The propulsion system is based on a DC motor which is coupled to the existing transmission. Lead-acid batteries are used to store the electrical energy. The auxiliary power unit(APU) consists of a small gasoline engine connected to a generator. All components are based upon existing commercial technology.