I use this camera for some time and can actually confirm all reviews. The sound is bad. Even a slight car radio is totally overridden therefore. The image is ok, but no number plates, not even street signs are legible. The story so far but no one has yet mentioned: Picture is definitely too fast. If you drive with a speed of 30, shooting the movie still looks very "athletic" from. That has to do with the wide-angle lens, is clear to me. But my feeling that I'm not mistaken, and the recording is actually running too fast, I could see one of these speed boards. Normally, slow flash, indicating the speed and a smiley face or the opposite (do not like it means, Angry?). In movie recording then the panel will flash a lot faster than in reality. I think that you should consider before you want to show someone that you were not going too fast.
Update from 09.29.2013: The evaluated by me camera I bought in 2012 for about 40 dollars then at Pearl and she still works. Therefore, because of the low price, I wanted a second camera. But all that I ordered in 2013 at online retailers or bought commercially were scrap. Thus, as described in most of the later Rezis. And all went back.