Indeed, besides the battery's and such, you still have to produce the power needed for the cars, and roughly 50% of the power produced in the US is coal power and a decent percentage in natural gas as well (may be more efficient in the long run, but still not 100% green). I just took a course on all of this stuff haha, I just get pissed off when Nissan shows their commercials about the leaf saving polar bears and shutting down gas stations, it is a load of $%%$. I think the way to go green is to build a car with the ability to capture all of the carbon that is released from emissions and is able to store it, along with increasing MPG's as high as they can go. It may be cheaper after a while in the electric car, but polar bears will still die anyways :0
Though on the other hand, the cleaner the air gets, the warmer it gets in theory (less reflective substances in the atmosphere to reflect the heat from the sun). Everyone wants to get all of the "bad" substances out of the air, but they do not want to sweat their asses off when they are gone
The only thing that would scare me on an electric car is the cost of the battery's, they must cost more than the car You have no choice but to go to the dealer and buy them/have them installed, the bill would scare me to death along with the poor polar bears lmao