Now that I'm here in the Southbay, I'm really only seeing Crown Vics and Chargers. I'll occasionally see Explorers, but that isn't that common.
However, when I was in Albuquerque, NM I saw a police Super Snake
and Corvette at a DUI checkpoint. I asked them why they had those cars and they said they get all kinds of cool cars from drug-related confiscations. They even had some snippy comment vinyled on to that effect.