trouble is,headcams work both ways,you have to remember to turn it off before you kick the crap out of latest w****er thats just tried to MURDER you in their two ton bedsit,and what do the police say/do if you go and show them perfect video of some poor sod getting flattened by jerk in bedsit on phone,picking nose,or having sex at the wheel,yep,absolutely nothing,unless of course your dead,then they may possibly tell coroner that said video exists...