Posted in WB Cartoon Companion on January 30, 2004
A favorite wartime gag of Bob Clampett. A cards were a part of the gasoline rationing programs of World War II, and entitled the cardholder to the smallest available ration of gasoline. Larger rations were available for uses deemed vital to the war effort through B and C cards, among others. See Gasoline Rationing for more information.
In Falling Hare (Clampett, 1943), Bugs Bunny points with his carrot to an A Card as the reason the plane runs out of fuel.