Humorous cartoon of prehistoric men struggling to push a cart with square wheels on logs while one man holds a round wheel, looking perplexed.

Humorous cartoon-style illustration: Prehistoric men push a wooden cart with large, square wheels. The wheels are square. The cart rolls along a path made of large, aligned logs, like a carpet of trunks. Some men push the cart, while others move the logs to extend the road. A prehistoric landscape of hills and rocks forms the background. In one corner of the image, a man holds a perfectly round wheel, looking perplexed, ignored by the others. The atmosphere is comical yet clear, with warm colors and visible details. See more