When I was younger and much more miscreant in my behavior, I used to be able to identify a Crown Victoria by the shape of their headlights in my rear view mirror. I could even discern the year and model of the car by where the parking lights were located. The earlier models had one contiunous orange light under a double headlight. Later models moved the parking lights over next to the one dual-use headlight in a more oval shape.
Like Superpowers dismantling nuclear arsenals, I really don’t have much of a use for identifying the make and model of the car behind me at night anymore.
But those Crown Vics are distinctive cars. And the older, more responsible me has become pretty adept at identifying the rev and hum of the engine when one is speeding down the street in front of my house.