The other day, I saw what I believe was a cop pulling a somewhat dirty trick.
There’s an intersection (NE 51st St. and 148th Ave., for those familiar with the area) with a dedicated right turn lane that gets a right turn arrow when the cross traffic has a left turn arrow. This trains drivers who regularly patronize this intersection to, shall we say, stop less thoroughly when turning right whether the right arrow is on or not. This cop was in an entirely unmarked car, and was slowed down to a crawl approaching the intersection from my left while I was approaching the intersection in the aforementioned right turn lane. I looked to the left, and noticed that the oncoming car was clearly not a factor due to his insanely low speed (10 mph, rounding up aggressively), but something nagged at me that something was wrong and that I needed more time to figure out what his next move was, so I slowed down and in fact completely stopped wondering "what is this assclown doing?". Good thing I did, because as I stopped, he immediately started to speed up. As he approached, I noticed the tiny little rectangular cutouts in his grille for the red/blue strobes, and as he passed me, I noticed through his heavily tinted windows the usual laptop computer angled slightly toward the driver. Final confirmation came as I noticed what looked like two disk antennas, one on the roof and one on the trunk, mounted on his car. Gone are the days where unmarked cops are spottable from their array of suspicious-looking antennas.