Made me immediately think about when I was in college in Washington State. WA (and Oregon for that matter) have paper temp plates that just need to be on the car somewhere. I think the law is "visible from the rear window". So all these blacked out cars and sports cars have their temp plates for months hidden behind their black tint or up in the dash in a way you can't even see it.

I think it's kind of dump they don't make you display. But also 20% of the cars in Washington are stolen so stealing a temp plate seems like it would be a pretty common crime.