[deltoidmaximus]

Once I started looking for the plastic plate covers I was actually shocked how common they are. Of course enforcement is so lax these days many people seem to be using a paper temporary plate that they printed out. No word on how many of those are even real, I can't even read the numbers on them through the window.

[fullstop]

Did you see the one which used an electromagnet to hold fake leaves in place? If they got pulled over, they could push a button which would allow the leaves to fall off.

[anonymars]

Need I remind you, 007, that you have a licence to kill, not to break the traffic laws

[nine_k]

Leaves are not ferromagnetic, so they won't stick to an electromagnet. A few small holes with a small pump that constantly sucks the air from them would help stick a real, unmodified leaf to the surface. and release it at will. This would require tampering with the license plate, even though in a very minor way.

[mikestew]

Leaves are not ferromagnetic

Fake leaves, as OP said, probably are.

https://fallplate.com/en/product/fallplate-kit/

[tbyehl]

In my town some of the police cars have darkly tinted plate covers.