Deliberate mistake: The little red-haired girl boards a bus with other children who are headed to summer camp. As the bus drives away, there is nobody in the driver's seat. This movie maintains Charles Schulz's policy of never showing adults in his comic strips or animated television specials, but a bus driver could at least have been depicted in silhouette.
Trivia: When the removal truck reverses into the driveway of the little red-head girl, the name on the rear doors is Mendelson and Meledez. It was named after Lee Mendelson who was an executive producer of the peanuts TV specials and Bill Melendez who did the voices of Snoopy and Woodstock.