Hydrogen, tested in buses from Amsterdam to Vancouver ... is a clean power that promises to break dependence on oil and gas -- at least in Iceland. With almost unlimited geothermal energy sizzling beneath its surface, Iceland has an official goal of making the country oil-free by shifting cars, buses, trucks and ships over to hydrogen by about 2050. About 70 percent of Iceland's energy needs ... are already met by geothermal or hydro-electric power. Only the transport sector is still hooked on polluting oil and gas. The world's first hydrogen filling station, run by Shell, opened in Reykjavik in April 2003. Hydrogen bus projects have also been launched in cities including Barcelona, Chicago, Hamburg, London, Madrid, Stockholm, Beijing and Perth, Australia. The efficiency of the hydrogen fuel cells will decide if the ventures take off into the wider car market. The idea is that the buses should be twice as efficient as an internal combustion engine," said Jon Bjorn Skulason, general manager of Icelandic New Energy Ltd. Greater engine efficiency would compensate for the inefficiency of producing hydrogen. Iceland's buses, made by DaimlerChrysler, cost about 1.25 million euros ($1.67 million) each, or three to four times more than a diesel-powered bus, Skulason said. It takes about 6-10 minutes to refill a hydrogen bus, giving a range of 240 miles. [A] Reykjavik bus driver said diesel and hydrogen buses were similar to drive. "But the hydrogen bus is less noisy."

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