Man, that was completely awesome, but that guy was lucky. If you tried to pull something like that in central PA where gun collections run in the dozens and I've seen pickup trucks with gun racks built in...
Edit: Hmmm... according to a bit of research, this might be entirely fake. http://wittkopp.net/
I'm inclined to agree with you, it seems pretty genuine (and there are enough idiots like that out there). I just find it kinda strange that someone would falsely claim credit for something like this- I mean, what would be the point? On the other hand, people do get a kick out of making something up that looks real and passing it around the net.