Photos: Hydrogen Road Tour gets into gear

Is this the gas pump of the future? The Nuvera PowerTap dispenses hydrogen to fuel-cell vehicles. It's part of a larger system that includes a generator and a storage unit. Hydrogen needs to be produced from other sources, as it doesn't occur naturally alone. Nuvera Fuel Cells' system converts water and natural gas to hydrogen.

Photo by Martin LaMonica/CNET News

Caption by Martin LaMonica