the dvr thing has worked, out here in cali some guy with an h2 caught someone keying and slashing his tires, he used the film to catch and sue the guy and won.
Also you never know what the hell people are going to do. we parked the G6 across the street from my buddy's house, some one walked buy and broke the mirror off while we where at the store in my buddy's car. no reason had really interacted with any other drivers or people in the town.
On a side note, I wouldn't use a gun, i would prefer something a little more personal, like a baseball bat
