My wife is getting her new car - Vauxhall Insignia (a GM brand) - which has full iPhone/iPod music support in the audio system, i.e. it displays track list, playlists etc. on the Sat Nav screen and can be controlled from the steering wheel buttons. Rather than keep connecting/disconnecting her iPhone I am think about a cheap iPod that she can leave permanently in the car. I know that the Shuffle, which is the cheapest, won't display track lists etc. presumably because it is a simpler device with no screen, but what about the Shuffle? Will they provide the full functionality? Obviously as they have a much smaller screen than the iPhone/iPod Touch I assume they don't display as much info on the screen so will that limit the info available on the car's screen?