Headed home on Broadwater yesterday I saw the cops had somebody stopped and they were driving an unmarked car.  If you look closely at the photo, you can see the right rear taillight flashing blue.  I'm not sure if it was BPD, I just know it was the first time I'd ever seen an unmarked at a traffic stop.  Luckily for me, I tend to drive like an old man and rarely make mistakes, so bring 'em on.  If, however, you like to go speeding through neighborhoods and the like, just know it's not only the black and whites on the lookout.