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Although it is easy to "cherry pick" data to prove a point, it's necessary to include all elements of a situation in order to arrive at an accurate conclusion.
The same EV powered from Hydro-electric sources is desirable whereas being powered from a coal-burning power plant leaves much to be desired, and falls short of solving the problem.
Think ethanol as the saviour of car fuels. It did not work out as planned primarily because all factors weren't assessed.
As my teacher told me a long time ago: "Do your homework".