I think this is a great example of why to have a dashcam. I have caught some pretty interesting things on mine. I've only turned footage over to police one time. A couple was arguing driving up 95 near Richmond VA. I'm guessing the girl grabbed the steering wheel and the vehicle crashed into the median. This was a few vehicles in front of me. As I passed by, the driver punched the passenger. I wasn't exactly sure what happened at the time and didn't see the punch until after reviewing the video that night.