^^ its probably a decommissioned cop car.

Never been pulled over while high or with weed on me, however, Ive been in a parked car smoking a joint while a cop like a steathly ninja that comes around a walking path on a bicycle looking right at me while i exhale a hit... he does a swing around. and at that moment... i almost screamed, HOW THE FUCKKK!!!!!!. however he just asked for my ID and my passengers ID and called them in to see if we have warrants and we did not, thus he just said, have a nice day, and biked off.