Many of todays Car Audio Systems have the option to directly connect your iPod to the stereo and the Head Unit will display all iPod information directly on the display. My Pioneer DEH-P6900UB is one of those but it doesn't work with the iPhone. I can and do use the auxiliary jack on my system to still play music but it's just not the same as being able to run though everything directly on my stereo. Is anyone else having any good luck or bad luck with their iPhone car stereo set-up? What brands have you found that work? Which ones do not? I'd kinda like to make a list of which car iPod Stereos are iPhone compatible.