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IMO even if it were practical and safe, the maintainence costs for a whole fleet of locos would be prohibitive. Electrification would be far better.It's really multi-fuel, environmental issues belong to the generating company, and electric locomotives outlast diesels by a wide margin and are easily upgraded and/or rebuilt. There is the cost of erecting and maintaining the catenary, but I wonder what the decision would be for primary mainlines if railroads didn't have such a hard time raising capital for long term investment? <br /> <br />One other high-energy low-mass alternative fuel is solid rocket propellent. I wonder what's happened to all this stuff left over from the cold war or if there's a practical way to use it.
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