using your phone for Nav

It would be cool for your stereo without Nav to use Blue Tooth to integrate the Navigation turn by turn on your Android or Apple or Blackberry phones to be over your stereo. So when the app talks to you your music stops and you can hear it.
Johann S 08/11/2013
They already do that.  My 5" Smartphone is mounted on a metal bracket next to the radio on my 2012 Mustang.  It is Sync'd with the Mustang via Bluetooth.  The only wire connection is the charging cable to the cigarrette lighter socket where I keep the dual usb socket charger.  It works just as you describe... Sync + Android rocks.