I have a 4 month old who doesn't like being strapped in a car seat. So when I'm out tutling around with my sreaming child in the back seat it would be nice if I could warn people that I'm on the verge of a homicidal frenzy. Unfortunately I can't find any of those cute little signs in the stores anymore. Maybe it's for the best, because in the unlikely event that my son did fall alsleep in the car & some A-hole on a Harley with straight pipes pulls up next to me and starts rapping his POS, I would surely go postal.