Got my car mount yesterday and slapped in the camaro right under the mirror, was out today and put the droid in it, connected to my stereo with headset plug, turned on some tunes then fired up navigation..... works so sweet! quiets music when a turn is coming up, sounds great through car speakers too. then right back to music. call came in it paused music sound went to call screen, i heard caller great and they heard me just fine, she couldnt even tell her voice was through my car speakers said it sounded great and clear to her. call was over it went right back to nav and music.
all in all very happy with the setup and the droid!!!
see on the forums with many people having issues and notice are alot from not learning the device or 3rd party apps that mess with it, I had wm phones that had same issues with bad written software messin with phone, just uninstall them and life will be good again.