I also would very much like to have the camera auto-tracking when patrolling. There maybe a settling time requirement before auto-tracking, however if it was less than two seconds, it would be great!
When tracking detects a vehicle, there should be an option to temporarily zoom in on a license plate number.
As a side note, I noticed that the auto-focus has problems at night. Why not integrate the focus at each preset and start the focus from that point when patrolling.