Wasn't it on Robbie Coltranes Trains, Planes and Automobiles and the episode on diesel engines where the figures for efficiency of fuels and engines was something like,
Steam 10% efficient,
Petrol 30% efficient,
Diesel 90% efficient.
I suppose it all depends on ones interpretation of efficiency.
Having just come back from the continent for Easter and noticed diesel a lot cheaper than petrol of all grades, I still wonder how, over here in Bliars Britain, we still allow the Gov't to get away with this completely opposite pricing; Especially as diesel is more efficient, uses less per mile relatively, it is cheaper to get onto the forecourt being less refined and pushes out less carbons than petrol.
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