I've noticed that when my wife's cell phone is in the car and active through the bluetooth car system, a small digital clock appears in the bottom of the screen right next to the 'strength bars' representing the cell phone strength.
That's stange...my phone is always connected via bluetooth and I don't see the clock?...well, is there a way to permanently display the clock, phone/no phone?...
Actually, I checked it last night (my wife drives the car most of the time, I don't) and the small digital clock is immediately above the strength bars in the very lower right of the display. I had the wife turn her cell off and when the strength bars disappeared, the clock stayed. So it is not dependent on the phone being installed.
It is in the same information bar that displays 'time to destination' and 'next turn' etc.