[Gogar]

IMO he did a poor job of controlling himself and/or the situation, but the woman didn't do a very good job either.

Apparently the woman was afraid that he wasn't a "real cop", and refused to stop for a few miles.

In Denver there was a rash of "fake police" stops where women were assaulted, and the cops suggested that if you were suspicious of a "fake cop stop" you should drive to a safe place and a real cop would be understanding about it. Apparently this cop was not so "understanding", but it's possible that this woman came up with that defense after the fact.