The videos appear to be those of cops pulling out of a parking lot with their personal vehicles after their shifts are over.
They're just a few of a much larger set of examples of those in US police departments showing little regard for the very laws they are supposed to enforce, though I admit window tints and front license plates seem rather tame to me.
However, it would be of no surprise to me should someone who themselves received an expensive ticket or tickets for it made it their mission in life to document off-duty cops' violations of the same.
Unmarked police cars are still otherwise pretty standard police cars, based on a handful of models. These are very clearly a full range of normal consumer cars. Undercover cars are a completely different thing and would be nowhere near a police station in the first place.
They're just a few of a much larger set of examples of those in US police departments showing little regard for the very laws they are supposed to enforce, though I admit window tints and front license plates seem rather tame to me.
However, it would be of no surprise to me should someone who themselves received an expensive ticket or tickets for it made it their mission in life to document off-duty cops' violations of the same.