I have the HUD & find it very useful.

Displays Speed, Nav instructions with turn graphics (directional arrow), distance to the next turn & cruise control settings.

I thought it sounded like an expensive 'toy' until I experienced it on my test drive, liked it, ordered it on mine & want it on all my future vehicles.

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2008 4.8i Mineral Green Metallic Sports Package, Technology Package, Cold Weather Package, Rear Climate Package, Premium Package, Premium Sound with iPod adaptor & Sirius Radio, Auto Tailgate, Head up display