As a fuel, hydrogen offers many advantages over other alternative fuels. It is the cleanest burning, the simplest and the most efficient. It can be used in vehicles either with a fuel cell as the cleanest option, or in internal combustion engines with significantly reduced emissions. Fuel cell powered vehicles that turn hydrogen into electricity are non-polluting, quieter and up to three times more efficient than diesel engines. Air Products has taken a leadership position in the development of the hydrogen infrastructure that will be required to fuel these new vehicles.