From BoingBoing a few years ago:
In 1972 the Highway Safety Division of Virginia published a comic book for kids about bike safety called Danny and the Demoncycle. It stars a young sociopath named Danny who enjoys riding his bike in such as way as to cause the death of innocent people. He changes his ways after having a dream involving Satan and a “demoncycle” that takes him on a ride so wild that even Danny can’t handle it. After that, he becomes an exemplary lad, following bicycle safety rules to the letter and admonishing anyone who doesn’t.