I just noticed that the price of super in my neighborhood is $4.09. It feels real great not to concern myself with buying that stuff anymore. I've driven close to 5K miles in my car and I'm still getting free supercharging. I calculated that to be about a $1,250 savings at $4/gallon for my 16MPG car. I think I've spent about $50 out of pocket charging at level 2 stations in the last year.