It may have happened somewhere, but I've never heard of or seen mention of one going missing on any of the RV forums I follow. I do know of one fellow that had a Tailgater sitting out by the park road with a for sale sign on it that came back from shopping to find it gone. When he got to his RV though, there was an envelope taped to the door with a name and site number on it, and a check inside for the full asking price.