mmm sounds like the ones have have in victoria. Although they are even more sneaky, can be any type of car parked on the side of the road, claped out bomb, commodore, even see a hz ute with the camera gear on it. they are really easy to pick on major roads though... oh let me see car parked in emergency lane, slow down to have a look.... what this black bar on the front. ahh camera.
Good thing is you can actually see these camera cars instead of the mulitnovas on the highways. gives you more time to slow down.