They are pretty accurate up to bout 100 mph, thats if they are calibrated correctly, most aren't, then there is correct use training.
Motorcycles are hard to shoot even with a laser gun.
I would suspect they clocked it with a car at some point and just estimated the rate of speed as he passed or accelerated away from them, thats my guess.
I would like to know more about the car he was driving, it would take more than cop motor, cop tires and some cool shades to handle 205.
Unless he bought the car from mark stidlow (I think thats how it's spelled)