I've gotten pulled over by UA police that got someone on radar doing in excess of 75 in a 35 (was the car behind me, but he pulled us both over), and I didn't even have a registration sticker on my car. They never said a word about it to me. For some reason when I got custom plates on my last car they didn't give me a sticker, so I assumed it would come in the mail, but it never did.