Good luck with Carmax, I took my BMW to them once to see what they would offer and they were WAY low. I wasn't rude about it, neither were they, I thanked them for their time and left...
Thats been some time ago, I think I owed 16 on it then, they offered something like 12, lol. When I refinanced it last year the credit union said it was valued up to 18. They still asked me if I wanted GAP when I was only financing 10, haha, I said, well if you say its worth up to 18 and I'm only borrowing 10, there isn't a gap that needs to be covered...
Only 7700 to go!