Tacodog,
When I was in the AF, I spent some time in Fort Worth. Saw the local gendarme parked on an overpass with his hand held radar shooting traffic on the interstate. When he got one, he'd radio the units down the road.
When the ground units stopped the car, they'd use their computers to run any wants, warrants and ID checks as I didn't hear a lot of 28/29 requests.
In Ohio, I could hear the OSP aircraft (VHF-Lo) for MILES AND MILES. They'd call the ground troop(er)s with a make, model and color of the car. I seldom ever heard the ground units as they were not on a repeater. So I don't know if they'd run checks or not. I am sure they did as I heard a dispatcher reporting on a vehicle the aircraft had spotted doing 120+. She told the ground unit the drivier had 180 prior offenses. Now that is ridiculous.