I,personally,would like to see *all* cop cars equipped with those dash cams...ones that record high quality video *and* audio.I've only been stopped three times in my life and got only one ticket (which I successfully fought in court) but if I'm ever stopped for *anything* in the future by a cop in a cruiser *not* so equipped I'm gonna fight it tooth and nail on the basis that the cop isn't presenting "best evidence" (a recording) of the incident even though the technology was widely available and the police department could have presented it if they had just spent the $$$.
A dash video is useful for exposing bad conduct on either side, but the problem is you don't have possession of it, and agency policy will likely make it as difficult as the law allows for you to obtain it.