On another site, there's a TDI guy arguing with a Volt guy that you have to pay tax on the tax credit for the Volt. Huh?
I would disagree, but I think I know where he is going. If you have a 300k loan on your house, and get approved for a short sale by the bank for 200k, the feds view it as a 100k increase to your personal wealth, and you will be hit with a tax bill based on 100k. (this tax might still be on hold) But I don't think a tax credit on a car is treated the same way. I could be way off though