"This is all about the weight of the vehicle, it has nothing to do with the fuel." It's not all weight, but also energy and density. It's slightly related to f

"This is all about the weight of the vehicle, it has nothing to do with the fuel." It's not all weight, but also energy and density. It's slightly related to fuel, at least until batteries get significantly lighter. Gross weights are misleading in this conversation because most passenger vehicles are not driving nor tested at their gross, but only slightly above curb weight.