Photos: Hydrogen Road Tour gets into gear

A look at the storage tanks used in conjunction with the Nuvera generator. Nuvera stores hydrogen as compressed gas while BMW has a system for storing hydrogen in liquid form.

Using a natural gas-to-hydrogen generator is far more energy-efficient than electroylzers, which are used in some hydrogen refilling stations, according to Wes Hansen, the lead systems engineer at Nuvera. An electrolyzer splits hydrogen from water using electricity.

Photo by Martin LaMonica/CNET News

Caption by Martin LaMonica