Maybe so, but it will be easier in the future to change 1 coal powered plant and have millions of electric car driving people overnight become "clean" vs still

Maybe so, but it will be easier in the future to change 1 coal powered plant and have millions of electric car driving people overnight become "clean" vs still having to change the coal plant and then convince millions of people to switch to electric cars because they are now finally green to the core. Plus, cities would be nicer if the pollution was just around the plant instead of in every street.