Weird Signage, Continued

My OOS pals, Cheryl Harner and Su Snyder sent me this amazing image today, with the following message:

hi Bill: Cheryl Harner and I were driving back from a birding trip at Lake Erie today when we saw this truck and thought of you (or rather we thought about your interest in weird signs). Anyway I suggested to Cheryl that she take this photo for you. Do you think they put that sign there to discourage the undead? Enjoy. Su