My wife just asked me how much it cost driving the Tesla compare to gasoline. I thought about it, but I really did not know. Let's say we are using 400Wh/mile in winter time with all the heat and snow and wind, and our actual electricity cost is 0.216/KWh after all the tax and fee. That's 0.4KWh/miles * 0.216/KWh = $0.0864 per mile. If we were to buy gasoline at $2.5/gallon. $2.5/gallon divided by $0.0864/miles = $2.5/gallon * (miles/$0.0864) That's only 28.9 miles/gallon. That is not an impressive number at all. Did I calculate it right?