that would be normal procedure... but i've had the same thing happen by suwanne cop.... i pull off of peachtree industrial blvd to l'ville/suwanne rd and i noticed to cops enjoying coffee outside their cruisers at the BP (its probably 10pm at night during the week)... i'm driving few miles later out of no where cop pulls me over right before i enter into l'ville... now he wasn't tailing me at all he came flying up on my tail in the dark w/o flashling lights or sirens he had to be going 80+mph then comes to crawl behind me turns on lights. then trys to give me a ticket for squeeling my tires when i made a left turn 5mins/miles ago; when he wasn't even at the intersection he was more then 100 yards away sipping coffee outside his car talking to another officer.
