I had an idea.
What about creating a subforum in each regional forum called Dealership Reviews, and everyone can start a new thread for their local dealerships (the name of the thread is strictly the name of the dealership), and then everyone can reply to that thread with their personal experiences at that dealership. For example, there's a local dealership to me called Global Imports BMW. I could create a thread called that in the Southeast Dealership Reviews forum, then people could reply talking about any purchases or experiences they've had with them, and later someone can search around for that dealership name, and read up on them.
Whatcha guys think? Did I explain it very well?