Advice for categorizing content?
@Drupality was right...It does require custom coding.
I installed Multi Term Views which will allow nodes to be filtered that contain different, multiple taxonomies from different vocabularies.
So you could have a filtered view at taxonomy/term/27+35 which will show all nodes in term id 27 and 35 or you can have taxonomy/term/27,35 which will show all nodes that are exclusively in both 27 and 35.  After that was set up I just wrote a custom menu and put it in a block in the sidebar.
So I have 3 vocabularies that are Year, Make/Model, and Type.  Make/Model is two terms deep. 
Not the best solution - but if a highly customized menu is needed then apparently this is what must be done.

Thanks @Drupality for your help.