The "Pinwheel Bus, 1947" refers to an illustration featured in a magazine during the year 1947. This specific illustration showcases a unique depiction of a bus, resembling a pinwheel due to its circular arrangement of windows. The image may have been created as part of an article about transportation design trends or as an artistic representation reflecting the optimistic post-war spirit and technological advancements at the time. The exact context, creator, and magazine where this illustration appeared are not specified in the title provided.