I wasn't sure if this was a general comment or automotive, but here goes.... I see these guys on street corners with signs advertising new homes, apartments for rent, or retail. Some call them sign spinners. I've seen some of them get rolling pretty well, and even drop them. However, what happens if they lose control and damage a car? Maybe scratch the paint. Maybe dent some sheetmetal. Probably depends on the material. I don't think they make that much, and who is responsible. I'm guessing they're paid as independent contractors.