How's the Nav system?
 

For those driving a Panamera, how do you like the Navigation system? Is it easy to use and accurate? Are you controlling it with spoken instructions? Is it well integrated into the audio and phone systems so you can hear instructions over the stereo? Is it as good as the aftermarket systems that are widely available these days from Garmin and others?

Good question. IIRC, it has a later version of the nav than even the 997.2 911s. I am going for an update to my nav soon, so I'll look into it.