Of course, the coal is usually moved by rail with diesel locomotives.
OK. Did you have a point? The energy used in moving the coal around via diesel locomotive is a very small fraction of the energy in the coal train. The powerplant I worked at as an engineering coop student ~35 years ago took in 100-car “unit trains” regularly, as in a few times a week IIRC.
The vast bulk of transportation energy in the United States is oil based. Electric cars aren’t for everywhere / everybody / every situation. But to the extent they make it possible to use electricity generated from non-oil indigenous sources as transportation energy, it is A Good Thing in my book. I don’t see myself buying one any time soon, but for those for whom it works, good on them!