Three of the actors in the movie have played a character named Rico in the past, and their characters in this movie are tied together: Casper Van Dien - Johnny Rico in Starship Troopers. Moises Arias - Rico Suave in Hannah Montana. John Gries - Uncle Rico in Napoleon Dynamite.
Cody's car has no actual license plate, but does have "Smodcast" on the plate holder. Smodcast is the podcast network of Kevin Smith, who is good friends with Jason Mewes (Andy).
(at around 50 mins) Andy (Jason Mewes) is sitting in the car with Cody. The front on shot shows Andy with his seat belt off, but on the side shot, he has it on, then off again on the front shot.