Hamburg’s hydrogen buses log 2 million kilometers

Since 2003, the number of hydrogen fuel-cell buses in the German city of Hamburg has grown from a single prototype to three dozen. The Mercedes-Benz Citaro fuel-cell buses have logged more than 2 million kilometers over the past eight years and data from the buses has allowed the manufacturer to improve the fuel-efficiency of the vehicles. The 39-foot buses can run for 155 miles before refueling and, thanks to lithium-ion batteries and regenerative braking technology, the buses can travel several miles on battery power if they run out of hydrogen. Link to full story in Gas 2.0.

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