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Fuel Cell Powered Japanese Trains on Trial in July 295

ScorpFromHell writes "As per this yahoo! news item, "East Japan Railway Co. is to conduct a test run of the world's first fuel-cell-powered train in July. The fuel cells, which generate power from a chemical reaction between hydrogen and oxygen, will help reduce environmental pollution compared to the existing electric and diesel engines, the company said." But I wonder how much energy did it consume to produce those huge amounts of Hydrogen & Oxygen? Will it be lesser than the power generated by the reaction between them? In other words, can this technology be used by countries with not so deep pockets as Japan?"

Numeric stability is probably not all that important when you're guessing.