I don't think that's what he's getting at...
I think that when an audiobook is three separate parts, it should be listed under one main part (much like a regular music album) and then you click on that, you get the separate parts of that audiobook.
It treats audiobooks downloaded from the iTunes music store in the fashion mentioned on the first post, which I find annoying. I downloaded a free audiobook that was three parts... when I go to "Audiobooks" on the iPod classic, all three parts are listed one after the other, even though they all share the same album info/artwork/etc. I think it would be better if it treated audiobooks much like albums.