Well, I got the PAC yesterday and tried it on my Sony head unit in the truck and it is pretty cool. I really like how you can turn it off, or go to another source and the iPod will stop. Then when you come back to the iPod, it will resume from where you last left it.
Anybody ever try this ONE (http://www.crutchfield.com/S-QlvKejI...=sony+%2B+ipod) looks like it lets have more control over the iPod.