started using a dash cam in the family car a few months ago...went to Amazon and found a reasonably priced, highly rated one. It takes a 180 degree, HD pic in continuous 3 min loops. I think it records about 6 hours or so before it starts recording over the earlier loops..actually thought about adding one in the back, too, but with the deep tint in the back I'm not sure how clear the video would be...
It's really just a response to the times we live in when many accidents can become a he said-she said affair...with video proof I am covered. Very happy with the unit..it's a Falcon (?) something...wife has the car now so can't check...
there are lots of riders who never leave home without their go pro filming...probably a good idea