> Is hydrogen more energy dense ... than traditional fuels Chemically, yes. But in reality, very far from it. The bulky high pressure cylinders needed to stor

> Is hydrogen more energy dense ... than traditional fuels Chemically, yes. But in reality, very far from it. The bulky high pressure cylinders needed to store the gas (unlike propane etc, it doesn't liquify) easily weigh an order of magnitude more than the mass of gas they contain.