Are you also going to spray your car with mud too? Going to have a hard time explaining a spotless car that only has mud on the license plate.
https://gdigraphics.com/police-car-ghost-graphics/
There were laws in many places where you could fight a traffic ticket because you couldn't plainly recognize a police vehicle, especially when a taillight or headlight is out, but now we pay for graphics to make them more invisible. "If you have nothing to hide, you have nothing to worry about." I like the plausible deniability angle, myself