power comes from somewhere, and that means Carbon

Business Insider has an article that reminds us even with electric cars, the power to charge the battery has to come from somewhere and that somewhere is mostly coal powered electricity. This means that electric cars are not as green as we'd like to think. Now it's easy to counter that we could go all solar which would make electric cars really green. So let's grant this that the power to propel the cars is green. But does that make cars for everyone a good thing?

When we talk about cars, we talk about operations but we forget to include the cost of the infrastructure  to let us drive our cars. For those in the S.F. Bay area, imagine rush hour with everyone driving a Tesla or a Leaf? Does it make it any better?