cant trade mine in? I have a 07 suzuki i owe around $12,000 on. Theres a mercedes for $13,500 that i want but i owe too much on my car to trade it in. I plan on going and talkin to the bank and seeing what i can do. What should i ask? can i have some money added to the loan i already have for the suzuki somehow to cover the difference in the amount the mercedes cost? how should i go about this?