I currently drive a 2001 BMW 3 series and have started thinking about buying a newer car. I watched the recent Tesla Model 3 presentation and was really impressed. One sticky point for me, not specific to Tesla but any EV platform has to so with where the power comes from. Specifically, if most EV drivers plug the car into their home system for power, aren’t they using coal or nuclear from local power company? Also, I see over 3,000 Supercharger locations in the U.S. where do they source power from? What is the argument for how this helps the environment. Thanks in advance for educating me.