I got the email a while ago so not sure if its already been reported here. I Also have the rego if the car if I am allowed to print it. Its an unmarked cop car grey gunmetal Ford Falcon I was returning from Tamworth/Walcha on Sunday afternoon and came up the back of this car just after the slab on the Old Pacific Highway. I knew it for what it was and realised i would just have to follow. He slowed to 40kph until it was safe to pass and then sped up to 60. The . . . he started to wave me around when there was only double lines! He kept that up all the way to Mt White where i turned off (had enough).