system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do undercover cops still drive the ubiquitous "cop" car, and wear uniforms?

You know when you see those black Ford sedans with the antennas out of the top? They're missing that cop paintjob, but when you pass them they're just sitting there in full uniform, in what is supposed to be an undercover police car. Why not have a fleet of PT Cruisers and Priuses and Escalades and Civics with plainclothes officers in them? Are the cops not allowed to be that sneaky?
gpt
Those aren't undercover cops. They are just cops in unmarked cars.

Generally police officers who aren't on patrol or doing traffic enforcement drive an unmarked car because it's less conspicuous. They aren't trying to hide, they just don't necessarily want to stand out or cause a commotion.