Whoa. That is a lot of efficiency with EVs. But then, that electricity, when coming from a coal powered plant means that the overall "earth to wheels" energy efficiency is somewhere around 30%.
True. But also, this decouples cars from fossil fuel dependency. So switching to something cleaner, like nuclear or wind/solar wouldn't require uprooting cars as a whole.
In the USA, outside of West Virginia, the grid tends to be much more low-carbon — at least biased towards natural gas in most places, but with a fair amount of nuclear even in states that claim not to believe in clean energy.