Where is the parental control.

I read a story in the paper today about a man tracking down his stolen 4wd.  Fortunately, he had left his ipad and laptop in the vehicle and because he had installed a type of tracking devise on his ipad the police were able to retrieve his vehicle.  Now comes the weird part!  The car was tracked to a suburban home and a 14 year old boy was arrested along with 2 girls aged 15 and 16.  Now, call me cynical, but I would be a wee bit suspicious if my young teenager came home with an expensive 4wd, especially when they were not old enough to have a licence.  Has no-one ever told these kids that you can't just take something whenever you feel like it.