If we're going to transition ground transportation to electricity, we're going to need to generate a lot more of it and beef up the grid to handle the extra workload. It isn't simply a matter of adding charging stations. I have no idea how much fossil fuel goes into ground transportation or how that energy would translate to electricity but it's probably significant. I would also say that unless that extra electricity comes from green energy, I'm not sure we're netting out much benefit. Although I suppose there's some value in beginning the transition.
