I'd actually like to see a communications link between the battery and the charger -- when you charge it in your garage, you swipe your credit card and get bill

I'd actually like to see a communications link between the battery and the charger -- when you charge it in your garage, you swipe your credit card and get billed for that charge. As long as it is, say, half the price of a tank of gas, then all is good. But, I just ran the numbers -- a Tesla battery costs about 30 grand. If it lasts 10 years (120,000 miles), and gets 300 miles per charge, that is 400 charge cycles -- or about $75 a fill up. Adding in electric cost ($5 at the cheaper rates), and gasoline price of $3.60 per gallon, then you are looking at getting a car with the equivalent of 22 miles per gallon.