If a person takes out a loan to buy a car then the financing company actually holds the title to the vehicle. You can't give away something you don't own.
(But hypothetically if you do, and it was simply processed as a regular card transaction, would the credit card company potentially have any claim on the title?)
I did not know the difference between a secured and an unsecured loan and that explains a lot. Cases of fraud or bankruptcy are really what I'm mainly talking about.
In most cases where the actual estate is not in the red, the estate will pay the debt and nothing should get repo'ed. If there were a lot of gifts made and cash transferred shortly before the person died, and now the estate is broke, then someone from the creditors' side is likely to seek more information about it, and exercise clawback opportunities.