This is not the first thread questioning / accusing police of wrong-doing or maybe even abusing their power. idiotic copper was the last of this sort. Bottom line is that they are not above the law, but to enforce it. They may and sometimes they will, use methods which will seem unreasonable and over the top. As already mentioned by another poster, exceeding the speed by either marked or unmarked unit, doesn't necessarily require blues and twos each and every time. They may need to catch up with someone without drawing too much of an attention. There could be other reasons too, e.g. escort duties. What has not been mentioned is that the traffic officers have got a very extensive training in high speed pursuit, which is far beyond to what a normal driver will ever do. Regardless how much of a great driver each of us will consider themselves, it will only be a matter of our own opinion and not necessarily a fact. What will always remain a fact, is that when you break the law, you should ready yourself to face the consequences of your actions.