Being a professional speeder from Jersey (carried it to Florida but after years, finally limiting it :-D )
I HATE when cops do this. Absolutely stick to the speed limit and all traffic signs, etc. He’ll use it to just teach you a lesson for slowing him down.
OR - you COULD try - if he is illegally and unsafely on your tail, open the window and wave Left hand to motion somehow to get his attention - if he pulls you over - are you bold enough to say ‘I’m concerned you are following me unsafely while I go the speed limit and if a squirrel runs out and I have to jam on my brakes, you will rear-end me at no fault of my own.” (meanwhile take his badge or car number to document what happens next.
I’m probably poking the bear...