This argument is sounding like a broken record around here, but let's kick that dead horse around some more.That's why I never lease a personal car and do not understand why anyone would - except they get tricked into thinking a lower monthly payment (rent, rather) means they are saving money.
If I take my MY2013 to the end of it's 24 month lease term (3 months from now) I will have paid $299.91 x 24 months = $7197.84 out of pocket, after which I have no equity nor liability (provided I don't beat it up).
If I had bought the car for the $39,020 negotiated price (which included lease rebates that the dealer passed to me, so I'm not sure I could have gotten that deal), less my $7,500 tax credit, I would have paid $31,520. In my area, I could probably get about $25,000 to sell my car today, a difference of $6,520. (This also assumes no interest paid on the car.)
My savings if I had bought it: $677.84, and that's assuming that in the next 3 months the used market for this car doesn't go down any when the 2015's hit the market.
Given the uncertainty of EV technology advances over 2 year terms and the benefit of not having to deal with selling it I consider that $677 a wash. (Also, in another 12 months I'll likely need to buy a new set of tires which would cost right around that much anyway.)
NOTE: I've left Tax, Title, Registration, Doc Fee's, etc. out of these calculations as they would be identical for buy or lease where I live. (we have to pay tax upfront on leases at purchase, not monthly)
All that being said, my next Volt may be a purchase since we now have an additional $2,500 rebate in TX which would be cut in half on another 24 month lease. Like others have said, you have to research the numbers and see how they apply to your situation. If we're all honest with each other, the most financially responsible thing would be to buy a reliable used car that gets decent mileage (be it EV, or not), we just all love driving a cool, new Volt!