Creditors can still come after the car if the debtor defaults on the loan, even if the title has been transferred to someone else. This is because the debtor is still legally responsible for the debt, and the car is considered collateral for the loan.
If the debtor defaults on the loan, the creditor can repossess the car, even if it is in the possession of the new owner. The new owner may be able to get the car back by paying off the loan, but they will not be able to keep the car if they do not pay off the loan.