One of the last times I drove the Jersey Turnpike, I was flying down the road at about 95, and was in the right lane, being passed by many on the left, and a huge gap between me and the car in front of me, and a Jersey state trooper pulled up and waved me on, like “Move it!” Then he took off, so I sped it up to a nice comfy 105 and kept up with traffic. Granted, that was the insane drive from Raleigh, NC to Montauk, NY that took me 8 1/2 hours and literally had me in DC in 3 hours. Most of 85, a group of us were hauling about 120. Most of the time, the trip took me between 10 and 12 1/2 hours. That night, it just seemed to be fate to get there fast. Granted, this is in 92, so the statute of limitations has worn off. ;)
My trip was in '98, and I was very surprised that everyone on the NJ turnpike stayed within the speed limit of 65. I expected something like you describe.
I figured, the enforcement must be very strict. I can't explain it.