We got the one used in our midget for the in car videos on youtube from
http://helmetcamera.com/
The only thing is I did a budget deal setting it up and used a cheap sony recorder I bought on ebay. The recorder doesn't like the vibration and occaisionally the picture messes up. If I were doing it again I would find some type of memory card that would hold the video or something with no moving parts. I even wired it to the battery on the car and installed a switch so the driver could turn it off and on while waiting on the grid etc.
Good Luck!