I have a few album collections; very few. For my use, I've mostly retagged all of the songs as the original albums. Only the songs that are unique to the collection get left inside the "collection album".
But that's not what you are asking. You are asking about having these songs be categorized in some way that allows you to see that they are part of the Cars Collection *and* their original album names. MC is very flexible in the way that it shows song metadata. You can really customize it in many ways.
However, my guess is that you want some sort of multi-level organization that shows album collections with albums and then when you click on the collection, it shows the individual albums within the collection. This can be done, but it's weird and doesn't work well because 99% of your albums will *not* be in collections and MC mostly doesn't know how to say "oh this album isn't part of a collection, I'll just group it with the collections.
Figuring out how you want to see this information is the key to this task. Would it be good enough to see the collection name either above or below the album name, along with it's thumbnail in album display? Or do you have something else in mind?
Once you figure out how you want to see this information, then you can structure your tags and views to show it. Within the limitations of the MC views system of course.
Brian.