We bought a used off-lease 2013 Fiat 500e for $7,100 out the door. In two years, we’ve driven 46K miles on it, saving 1,703 gallons of gasoline compared to the Lexus Rx400h it replaced as a commuter/errand car. The car has paid for itself in terms of fuel and toll-road savings. Further, it saved my wife about 40…