Ive been looking into go pro cameras for use on my motorbike and have just bought a contour roam 2 instead as its half the price of the gopro and is a lot smaller. I figure it will be easier to mount on my motorbike helmet, or elsewhere on the bike.
But for in car, this £35 ebay special thing looks perfect - i might have to get one too! Only pain will be having to rip half my dash out again to wire it all up stealthy.
Cheers dude!