To claify the position on weights for cameras in cars. There is due out soon a set of CAMS guidelines for mounting cameras in cars. I know, beacuse I was a consultant on the project. Broadly speaking, the weight limit is 200 grams including mounts for each component, without special mounting requirements. Anything over that will need to be enclosed in a special mount. Cameras like the RadCAM HD20, GoPro, Contour, Drift, Replay XD1080 are all well under that weight, and will all comply.
No cameras are to be mounted outside or inside unless there is a substantial secondary tether connected to stop accidental release of the camera. I have over 10 years experience in fitting onboard cameras for TV etc and so cameras like the RadCAM are very easy to install and use. I did the onboards for the GT Series at Phillip Island for One HD last year and trust me, if they were that hard to fit, I wouldn't use them. I did 10 cars by myself and even had to change mounting position in between races. The camera can be mounted outside as the new cables are thin enough to be routed inside, allowing the driver to operate the camera. Audio is then sorted as the mic is located on the receiver, rather than the camera mounted out in the breeze. The RadCAM is the official camera of the ARC, V8 Utes, Bondi Rescue, Targa, the Bathurst 12 hour and the WRC Academy etc etc., so it must have something going for it.
Battery life is always an issue as we all forget to turn off cameras from time to time and flat batteries are the cause of more lost potential footage than I care to remember.
No date set for release of the new guidelines, but I am told it will be soon.