This poster was issued by the U. S. government during World War II: An illustration color poster shows a man dressed in a suit, tie, and hat driving a convertible car with the top down. In the passenger seat next to the man is a white outline caricature of Adolf Hitler, in uniform with the hair swept across the forehead and a small moustache. The text says, When you ride ALONE you ride with Hitler. Join a car sharing club TODAY! Public Domain What was the purpose of this poster produced by the Office of Price Administration during World War II