I noticed some brand new (66 plate) single decker pure electric buses around
Waterloo today. They look very nice (apart from the huge battery pack on the
roof) and certainly have a good turn of acceleration off the line. I notice
however that their unladed weight is 12 tons which is more than a lot of
double deckers, presumably because of the battery. I wonder how efficient that
actually makes them when you calculate it all the way back to the power
station?

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Spud