Electric vehicles suitable for commercial use have been developed, including electric taxicabs and hybrid cars. The electric taxicabs are designed for quick battery changes like refueling a gasoline car. Market studies show a demand for electric light commercial vehicles with payloads of 1/2 to 3/4 ton. A hybrid car with an electric motor assisting the engine can reduce gasoline consumption by 50% in cities. Tests have shown fuel economy improvements of 30 to 100% for different vehicle configurations with a new prototype engine and electric drive train.