You can see TheSlap.com, the official website of Dan Schneider's new show Victorious, multiple times in the bloopers, often replacing green screen shots from the actual episode.
The van which Guitar Dude uses for his Canadian tour is the same van used by Erwin Sikowitz in the nickelodeon show "Victorious" in episodes such as "The Great Ping-Pong Scam" and "The Diddly-Bops."