A Hybrid Electric Vehicle(HEV) has been developed for use in the intercollegiate 1993 and 1994 Hybrid Electric Vehicle Challenges. A conventionally powered vehicle was converted to a series drive hybrid electric vehicle, named AMPhibian II. The AMPhibian is designed to be an economically feasible HEV, for use in near term applications. To accomplish this, all components are based upon existing technology. Regenerative braking is used to improve the range and economy of the hybrid electric vehicle. The design and performance of the vehicle, including the relative benefits of regenerative braking are reported.