At least the weight will be (measurably) consistent no matter how much charge is in the battery. That said, they still weigh more than diesel so I assume they'll pay more at the scales.
> they still weigh more than diesel so I assume they'll pay more at the scales
I'm not sure what you mean here. In the US, scales are used to ensure compliance with axle load limits, not to determine any costs.
In any case, since they don't need the weight of a diesel engine, transmission, fuel tanks, or emissions systems I'm not sure how the weight balance will work out.
