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CatalunyaNeil (not verified)    February 24, 2015 - 6:52PM

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Railway (-road) locomotives, in places where it is not economic to run electric overhead cables, running at near constant rpm, have been using diesel electric technology for 50 years, very efficiently.

arguments from people who consider the tax inclusive cost of fuel need to be discounted. Taxes distort - sometimes or often deliberately - the real efficiencies.

Diesel electric is a mature technology with a bad press. For people who drive long freeway miles, needing the occasional burst of overtaking power, the torque of the (turbo-) diesel plus its efficiency at medium rpm for charging are unbeatable.

Note that in Britain, new diesel sales are now greater than "gas" (-oline)

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