I was using that number to represent just the energy required to motivate the car, and assuming that an EV has near-perfect energy translation from battery to m

I was using that number to represent just the energy required to motivate the car, and assuming that an EV has near-perfect energy translation from battery to movement (and therefore providing an accurate enough representation of that energy). It gets a little complicated if you want to consider the fuel input, as you start getting into wells-to-wheels calculations. Depending on your power grid energy mix, it also makes things quite a bit worse for EVs.