Just had a quick question on iPhone 3gs functionality in a vehicle. My stereo has a typical iPod cable coming out...I plug in my iPod/iPhone and the screen changes to that "Accessory connected" screen. I have to control my iPhone via the stereo now (for anything to do with music). So, does the whole "Voice Control" thing work when the unit is plugged into a car stereo or other device? I just wanted to verify one way or the other as I'm in the market for a new car stereo and would like to know if I need to target my purchase toward something that has voice control versus just being able to use the built-in Voice Control app. Thanks!