13. Rusty Vans
Due to many books, movies, and TV series, those plain white and unmarked vans are the favorite transportation of serial killers, kidnappers, and other kinds of criminals. And that is especially the case when they are rusty beaters with clouds of smoke puffing from their old exhausts.
Apparently, the cops agree, so if you have a rusty van, you might get some attention from the cops who want to see if you are hiding something or someone in the back.