I've got basic bluetooth and no Nav. Can't use the white iPhone/iPod cable so I tried the Y cable my wife has for her mini (3rd party one from Singapore via eBay, works a treat for £10
http://cgi.ebay.co.uk/ws/eBayISAPI.d...m=290456988853)
It lets me pick my iPhone in the CD/Multimedia list and I can choose albums/artists/playlists etc. via iDrive and the screen display the track info but no Album art. Sorry for the quality of the pick but the short cable meant I couldn't get a good shot with the phone (iPhone 4).