A fuel cell vehicle (FCV) or fuel cell electric vehicle (FCEV) is a type of vehicle which uses a fuel cell to power its on-board electric motor. Fuel cells in vehicles create electricity to power an electric motor, generally using oxygen from the air and compressed hydrogen. A fuel cell vehicle that is fueled with hydrogen emits only water and heat, but no tailpipe pollutants, therefore it is considered a zero-emissions vehicle. Depending on the process, however, producing the hydrogen used in the vehicle creates pollutants. DOE is focused on developing technologies that can produce hydrogen at a target of less than $4/kg (delivered and dispensed). To reach these goals, the program looks at a wide portfolio of processes over a range of time frames and production scales. Currently, most hydrogen in the United States is produced by large-scale natural gas reforming. This established technology has been shown to be able to reach the cost targets in the near-term, as early stations are being built. To produce hydrogen economically and in environmentally friendly ways in the future, DOE supports the research and development of a wide range of technologies. In the mid-term, technologies based on renewable resources, such as biomass and wind-generated electricity, are anticipated to begin reaching the cost targets. In the longer term, technology pathways with near-net zero carbon emissions, such as those based on solar energy, are expected to become viable. Reff: http://energy.gov/eere/transportation