I read somewhere they could sell the cars if they can be bought up to code, so to speak.

But to do so will they still be something people want to buy? Folks bought these for all sorts of reasons, mostly MPG. But if they can't deliver on the MPG will they still be purchased?

VW will have to reprogram each car since this is a software thing, but will they then have to sell them for 50% of what they are worth? Or will they be more in line with the used price of a gas VW?