This is a very thorough article, but I wish it had included information about how many folks who have electric cars can also charge them with home solar systems. Those folks are doing double service---not stressing power resources and not polluting the environment. Is it expensive? Oh, Yes! Does it pay off in the end? Not sure. Does it matter? Not if we hope to leave a viable earth to our children and grandchildren. Some electric cars have a back-up gas tank. It's not nearly as efficient, due to extra weight, but sure saves the day when charging is not available. I have a 2014 Chevy Volt which I take to the gas station about 2X per YEAR, purchasing 1/2 tank. I don't drive long distances, so if I charge (at home, using 120) regularly, it's just not an issue.

Suggest everyone go on youtube and view stories about kids in the Congo mining for cobalt and other minerals, I guarantee you will not buy an electric car slave labor in Congo to mine it slave labor in China to build them.