I haven't ridden a bicycle since I lived in the Bronx nearly 20 years ago. However, in the 1960's, kids were shown this videl to warn them about bicycle safety. I suspect they all got nightmares. I know I will. It's a cross between the Flying Monkeys in the Wizard of Oz and Planet of the Apes. That lovely old queen Edward Everett Horton narrates. It's long, but unmissable.