Car dealers in general are an awful lot like the music and movie industries. They will be dragged kicking and screaming into the 21st century.
Many dealerships see the possibility of using the internet as a way to generate leads so they can contact you in hopes of getting you to show up in person for the traditional sales process. These people don't realize that the customer might want info just to see if they are wasting their time (and theirs) before they go to any real trouble.
Check out edmunds.com forums, specifically
http://townhall-talk.edmunds.com/direct/view/.f09ff51 "Stories from the Sales Frontlines" for some insight.
If you go back far enough, I think you will find that most of the dealers find the idea of generating sales leads via internet great, but at the same time regard it as a huge hassle.
I hope this makes sense. They are running a business, after all.
Untill recently, I was still getting junk email from a couple of dealers from an inquiry I made in 2002. Good luck. Buy what you like, and like what you buy.