IRL. A friend of my dad's sold his car when his health wouldn't allow him to drive anymore. The teenage brat who promised to pay for the car over six months of course disappeared with the car and stopped making the payments.
So I stalked him via FB and Myspace, so that my dad and I could repo the car. Called his work a couple of times to find out if he was there, so that we could prowl the mall parking lot and get the car while he was at work. I wasn't trying to be subtle about it, so he must have figured it out. His mother popped up and pays the rest of what he owed on the car.
Turns out she was mad at her kid for not paying the sick old man for the car, so she put the car in her parents' garage and wouldn't let the kid drive it until he paid up.