Some may want this some may not for whatever your reasons, here is a simple hack to help you capture your road travels with a car mounted camera.
Wanting to turn his iPhone into a kind of cops style dash camera, Tim Cox decided to take the simplest approach and just cut a hole in his windshield mounted iPhone holder that was matched up to the camera on his iPhone.
When the iPhone is mounted into the holder he has a very nice view of the road through the video finder as if he was actually recording from the perspective of his rear view mirror. You could probably do this with any camera phone so long as you select the proper case and of course the mount. Source – lifehacker.com