Fuel Cell Vehicles (FCV) or Hydrogen powered Vehicles european prototype A fuel cell is a hydrogen-fueled chemical reactor that generates electricity. Fuel cells have been around since 1839, but did not gain popularity until NASA’s space program attempted to use them. Basically there is no pollution from this process. Since hydrogen makes up 90% of our atmosphere refueling should never be a problem. This form of transportation would provide a way for our society to lessen its dependence on fossil fuels. There are some vehicles on the roads today that use this process but this is an energy form still under development currently. This is by far the most efficient alternate energy source and hydrogen power seems to have a bright future.