The officer has conflicting facts stated regarding the pace. First he says 1.5 miles, then when he pulled up to your vehicle, you pulled over...appears as if a proper pace did not occur.
Additionally, the speedometer calibration does not appear to be valid. No certificate of calibration is shown, just a legal conclusion that it was calibrated. And a police officer hardly has the skills needed to perform such a calibration nor the equipment to do one. I know what they do...they drive around at various speeds and use their RADAR/LIDAR to check the speed by which the vehicle is going. However, the RADAR/LIDAR is not designed to perform this task.
Of course, the officer's statement can be used to impeach him at trial...if he shows up.

