I havent heard what hospital bills you have, but you dont have to sell your car. Law permits you to pay them somewhere between 5 to 10 dollars a month. The hospital can't take any action against you as long as you are attempting to pay the bill. You can pay them the full amount at your convenience as long as you make a monthly payment. They will try to make it sound like you can't and try to scare you if you talk to them about it but it is legal.