Where in the code do vehicle collision details get animated?

I have been searching for at least an hour for SOMETHING, ANYTHIGN that would lead me to find out where the vehicles collision details are animated. Unfortunately, and as you may have already guessed, I didnt find anything. Alot of the collision stuff is simply too abstract for me to get anything otehr than a vague understanding of what it is doing.

So I was wondering if someone could be so kind as to point me in the right direction. All I need is the file and line # of the function that animates a vehicles collision details, along with a short description, and I think I can take it form there.

Thanks!