An email autos with named stickers

it has occurred to me that there are far too many autos with stickers on the back window that share information about their children. Have you seen them.?? Little icons with the childs name, the sport they play,(some even list the childs player number) the school they attend. Now a predator would have all this info and more....the lic. plate number, type of auto driven.....
Say there are two children. Susie #21 plays soccer. Bobby #30 plays baseball. How easy for a predator to approach and child and say "I think you play soccer well, and how about Bobby! Good at baseball, isn't he?"
The child would think this person might be a personal friend.
Just a thought to share with you. Thanks