I thought the traffic code was written requiring the LEO's car to be clearly marked to engage in traffic enforcement stops. We have all seen the ghost marking cars crop up which is a grey area when determing "clearly marked". But I have noticed more and more traffic enforcement in the Austin area using completely unmarked cars to make a traffic stop. I am not talking as a spotter but actually making the stop. Is it unlawful? If I am ever acquisitioned by one of these I will head to the nearest public area like a gas station. Too many people, men and women, have been robbed or worse by emposters in Texas.