Power in the UK/Europe
John,
That's the problem, I suppose, but the thing is, unlike the infernally combustible requirements of most Detroit iron it could come from anywhere that produces electricity. In the UK at least renewables are increasing all the time as the smoke-producers and nukes are switched off. It will take time of course; but the train will still use that power far more efficiently than said road iron, as the coefficient of friction 'twix steel wheel and steel rail is only a tiny proportion of that 'twix rubber and the road (hysteresis in rubber). Could go on and on, but I guess you'd be bored pretty soon. Mike