If your car is repossessed how do they go about getting the rest of the money from you?

After the car is repoed, the lender will ask you very nicely 3 or 4 times to pay the balance on the loan. Each time they will remind you that they have other legal remedies to use to collect. If you cant/wont pay the balance due, they will use the other legal remedies. Those may include: getting a judgment against you for the amount due plus fees, garnisheement of your wages, attachment of other property that you own.