Maybe we need a thread to discuss in-car cameras?
HD Hero's have great picture quality, but IMO, the sound is appalling. I have one and no longer use it because of this. Sound is a huge part of a good video. Not everyone wants to hear a song instead of a Hemi
I'm now using a RadCam HD. It offers an external mic option, and is a remote lipstick style camera. Nice unit and has served me very well.