Deleted Gorilla Scene
The original screenplay for this film actually was a very long and quite convoluted story. There were original parts and characters in the movie that added little to the overall structure and were just some strange bits of world building. Because of their little consequence, these scenes were cut from the final product.
One example of these is the gorilla brothers stealing Troy’s car. No that wasn’t a typo. As you can see from the picture, there was a scene . . . in the original movie . . . where gorilla brothers broke out of the zoo . . . and stole Troy the bully’s car.
Apparently, this was meant to be part of the opening car chase to further increase the hectic nature of that scene. After realizing that Troy would need his car in order to pester the protagonists, (and hopefully also realizing how ridiculous this idea was) it was determined that cutting this scene would be in the film’s benefit.
These two oddly-placed apes were simple character actors in gorilla suits that were meant to just drive the car around in a haphazard manner.