Garmin has a new head unit (internally dubbed Everest) that's due to arrive in a few OEM vehicles later this year, and aside from an attractive interface, a revamped navigation system and one-shot voice commands, a new audio app from Gracenote could be included in the package.The app is called MoodGrid and it's a scaled down version of the Android-based version that Gracenote has been testing for the last year. Like the tablet app, the automotive-spec MoodGrid has a graph with Positive, Calm, Energetic and Dark on each axis. Place your finger anywhere between those points and the system scours your iPhone, iPod or Android device for tracks to match your mood. The automotive version uses a five-by-five grid and
