Whatever happened to the hydrogen economy?
Other industry observers are far more equivocal. "The jury is out on battery versus fuel cell," says Richard Wenham of car industry consultancy Ricardo. "That's why everybody is researching everything."
But for all the research into hydrogen, fuel cells remain dependent on platinum, and hydrogen generation is still punitively inefficient. Meanwhile battery technologies are developing rapidly and continue to attract huge investment. The jury may not be out for very much longer. According to Kendall: "Hydrogen has always been the fuel of the future, and it looks like it always will be."
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