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The Apollo missions and the Space Shuttle used Alkaline fuel cells.
If there really is some kind of "new and improved" alkaline fuel cell that doesn't use platinum I'm certain it will be taking over the market soon. But I'm not holding my breath.
In any case, hydrogen is a wretched fuel for a lot of reasons. This train experiment was doomed from the start.
https://www.si.edu/object/allis-chalmers-fuel-cell-tractor:nmah_687671
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