(See illustration diagram). ... Compressed hydrogen fuels the engine, providing a range of about 250 miles. ... applications are by far the largest market opportunity available to fuel cell technology and have been the focus of intense development effort. ... Daimler Chrysler has indicated that the technology has the possibility to be maintenance free and that mass-produced fuel cell cars are expected in 2004. GM, Ford, Toyota, Nissan and Honda have aquot;Fuel Cetts targeted similar dates.