In an earlier post, I mentioned that Alpine was working on a interface to use the iPod with their Ai-Net system bus. This will allow the ipod to be used with Alpine car head units. It looks like the iPod interface will be displayed on the head units display, including the track and album titles. Here is an MacCentral's article on the latest announcement. It looks like it is coming out this fall.
This looks like a very cool product, especially if you already have a Alpine head unit.