Side note: I have to say that I am pretty impressed with the GC's gps acquisition time cold (it's quick) and re-acquisition (a few seconds at most after exiting a tunnel, for instance). I have also noted a spot on speed match to my Volt's speedometer (tested by me by "announcing" speeds displayed on the speedo while recording footage and audio. I later listened to the audio announcements while watching the video and displayed speed in Registrator Viewer.) The Mini 0806 I used to use had painfully slow Sat acquisition/re-acquisition. (RIP 0806. You will NOT be missed.)
To the original poster, for excellent video, audio and gps quality, I think you will really like your new GC!