The Silver Boulders have a lot in common with The Beatles.
*At the end of the film the band performs on a roof top of and apartment which is what the Beatles did in the late 60's.
*The logo of "The Silver Boulders" is extremely similar to the Beatles logo.
*In the movie, after someone asks (in a teasing fashion) why Nat talks in an English accent while around Rosalina, another band member says "Because he wants to sound like a Beatle" (not an exact quote).
*Early in their career, the Beatles were known as the Silver Beetles.
*The original title of Crazy Car was "Scrambled Eggs", which is also the case for a Beatles song.
*In the movie, one of the reasons the band became divided was because Nat had a crush on Rosalina. Many believe that the reason the Beatles broke up was because of John Lennon's relationship with Yoko Ono.
*There is also a point when they are talking about a song and Alex says in what sounds like a beatles accent "I think the girls will dig it" which is something one of the beatles said about a song.