In looking for a dash camera that can video both traffic and most importantly traffic stops. I am a national and therefor drive without a license or registration according to my constitutional right to travel. So my emphasis is from the prospective of the one being stopped. I need a camera in both the drivers window and the rear passenger window to capture second patrol-man's antics. I need a microphone that will capture what both parties are saying clearly. I also need the unit to somehow lock so that tampering with the evidence will not be possible if law enforcement decided to overstep their bounds. I also need some way to save the incident so that the recorder will not just continue to tape over the card should I be dragged through the smashed drivers window and dragged off to jail. Best options anyone?