Anybody in law-enforcement ever come across these license plates?

I see the license plate all the time in my neighborhood. I was wondering how the police deal with sovereign citizen, type people that insist they are traveling and not driving.

I imagine most cops don’t wanna deal with these Looney Tunes and I don’t blame them. I imagine they are a gigantic pain in the ass.

Any of you guys ever have any experience with these people?