Caillou is Car Knievel's favorite show. He is seen watching it with Mario in one of vptuna's videos. There will be another video in which Mario tells Car Knievel he needs to stop watching it. Car Knievel gets mad whenever someone disses Caillou, which they always do on Youtube.
- When Cale Coleman, the creator of the vptuna series, was a toddler, Caillou was one of his favorite shows.