I'll put my 2 cents in here. I am not anti-cop; my aunt and uncle are both on the job down in MD and I am very close to them.
My uncle is actually worse about this sort of thing. Not necessarily doing a "blue light pass", but generally driving every car he's in like it has a light bar on top of it. He doesn't seem to understand why everyone is getting annoyed around him when he's cutting people out in the family minivan and tailgating at 85 MPH. I guess he's just too used to people moving over for him when he's driving his cruiser. Once, he told me to squeeze my SVT into a spot that was too small to safely pass, and I refused because a) I like having a clean insurance record and b) my 7 y/o cousin (his son) was in the car with us. He asked me: "Doesn't this thing have some b*lls?". :rolleyes: Of course, I opened it up on the next strip of clean road for him.

This behavior surprises me since he's a very good cop in general (he's not 40 yet and he's a Lt. and barracks commander for the MD State Police).
He once told me that if he was in court after pulling over a motorist that was followng him exceeding the speed limit (the speed he was doing), he would just tell the judge that he was responding to a "lights off call". I'd love to be in court and have to respond to that. "So, did pulling me over delay yor response to this important call? What/where was the call and why was it so important to illegally exceed the speed limit with no emergency signals?"

That said, I followed a DE Trooper for about 90 minutes, matching speed as high as 95 on a rural highway. She would notice me not getting smaller, slow down to 55 (so would I and not pass), then speed up. She even waved her hat to me on one slow down, but she never bothered to pull me over. This wasn't even in the SVT. I'm sure she realized she was in the wrong and that's why I wasn't ticketed. I made good time that day.
My aunt is a good driver when she's in a civillian vehicle. In her cruiser, she's just used to cars parting like the Red Sea though. She tells me that she earns the right to speed because she risks her life on the job every day. I tell her that she (especially in her cruiser) should be setting a good example for everyone else. It's a never ending argument that starts every time she chastises me for speeding on the highway. Of course, she thinks I'm going to kill myself at a drag strip (in a Contour? I doubt it) so there is just no getting through to her sometimes.