Also, I had posted another thread in here about how to mount the ipod in the Matrix. I did a lot of searching, and I found some customized mounts for iPods and PDAs and whatnot. The problem is, that the console is shaped weird, so you really need a customized one that is slanted and goes above the head unit. The base costs about $30 and the specific iPod mount to go on top of the base is another $25 for stationary and $35 for one that swivels.
Instead of buying one of those expensive pieces of plastic, I picked up an old Belkin Tunebase (the one that charges, not the FM transmitter) for about $35 off of newegg. It works great with the audio adapter, because you just stick the iPod in the charging dock, and there's an audio output right on the cigarette plug. The sound is so much better than the headphone jack out of the top of the iPod. And the stiff neck holds the iPod high enough for me to see it and change tracks, so no mount is needed.
Here's the one I got. I have an iPod Mini, so be careful that you get something that works with your model.
http://www.newegg.com/Product/Produc...82E16855999618