my stereo just has an audio input. so i can play music. but it does not control the ipod. i have a touch. my question for those with an ipod enabled car stereo is if when turning the car off. what happens to the ipod? does it just keep doing it's thing? or will it pause the ipod and turn it off? and if it does, what happens when the car turns back on? i realize these may sound trivial. but it does it with cd's. it should be standard on mp3 devices also. technology should add functionality. not remove it.