Cynthia Luce recently saw a dark blue sedan chase and pull over a speeder on Highway 1. The only reason she knew it was a police car was the flashing lights in the rear window and the two uniformed cops who jumped out of the unmarked car (probably an undercover vehicle pressed into service). This was evidently part of the San Mateo County mutual-aid agreement that allows other jurisdictions to help Pacifica police with traffic enforcement. Drivers, beware! Slow down, signal lane changes, obey the law, and don't be a jerk.