I thought I'd seen this before, but the video you linked wasn't the one of which I was thinking. Good to know that there are at least two very cool and collected police officers out there.
I know folks would disagree with me, but I kind of feel bad for the guy freaking out. He's obviously shaking with rage, and perhaps beginning to lose control completely. I wondered if he'd make it home safely. I kind of think the officer might have felt a little badly for him too--not that he got pulled over and had a shiny new speeding ticket, but because it was becoming apparent that this dude was in a pretty low spot. Felt like the officer was standing there and thinking (as the man ranted) "Damn...must not be much fun being him...seems he's got bigger problems than a speeding ticket."