Fiat 500 starts at $17,145 and get 40MPG. Fiat 500e starts at $32,300. So, for the price difference of $15,155, you get get ~5050 gallons of fuel @ $3/gallon. @40MPG, you’re looking at a break even mileage of 202k miles. 202k miles at 60 miles/day, it would take your friend about 13 years of commute to just break even. Yep, that seems like a smart way to spend your money.