If your interested in purchasing a Dash Camera, I would recommend doing research first to ensure you get the camera that suits your requirements.
I came across DashCamTalk website just today, and thought I would post about it, since it has great information.
It also has a good write up about the many different models of the G1W, which is one of the units I recently bought myself. I got a G1W-C, which is what I have used recently to capture footage.