For those of you with the Acadia navigation system, I just learned about this great feature and wanted to point it out in case you haven't used it. It's really easy to use: you just press the "talk" button on the steering wheel, wait for the beep, and then say a command like "Radio ninety-seven point three FM" and--boom--the radio automatically tunes to 97.3 FM. It also works with XM (use a command like "Radio sixty XM" to automatically tune to XM channel 60), CDs & DVDs (use "CD track three" to automatically go to track 3 on a CD), and-best of all--the navigation system. You can add a voice tag to any address in your address book--"home" is the most obvious choice. Then you say "Navigation go to" and a voice comes on and says "State your destination." You then say "home" and boom--the navigation system automatically calculates the route home. It even allows for stopovers. The system appears to "learn" your voice with use--it took me 2 or 3 attempts before the recognition began working really well. Now, it works so well, it's a little scary--almost like "big brother" is riding with you in your car! Very impressive feature, and it is helpful from a safety perspective, since you don't have to take your eyes off of the road to use the system. Enjoy!