I couldn't agree more, the more covert/unmarked cars and bikes the better too.
If I can drive 90kms twice/week and see umpteen people on their mobile phones - cutting in front of other drivers in an unsafe manner - camping in the RH lane on dual carriageways etc. in both directions then surely the cops can too.

Problem is you never see a Hwy Patrol car on that stretch of highway or see an unmarked car that has a car pulled over, because they have the "point to point" speed cameras, "occasionally" they will setup a mobile speed camera within approx. 200m of the point to point camera in the south bound lane.