You may be comparing apples and oranges if you are comparing the cost of a new electric with a used gasoline car. A new Volt costs $35,000 before the federal rebate, $27,500 after. So unless someone is paying you $2,500 to take their used conventional car, I doubt it is $30,000 less.
There are used Volts on the market that you could look into.
Of course you are right...but if your argument for buying an electric car if for operating cost then it is not the best alternative....also don’t count on those free fueling stations in the future!!! Unlike others I don’t blame you for taking advantages of our governments stupidity!!