I get it.Arizona is well known for pulling over anything that looks like a work vehicle but has out-of-state plates and relentlessly quizzing the driver. Even if you get away with it, at some point it's not worth the hassle. I like the one year and then reregister trick.
But if I'm going to say...buy a 130,000 dollar super truck or super car. Basic math would say, I'll use 6% tax (MD), that I'm going to pay nearly 8,000 dollars to "drive a vehicle legally" on the road. Imagine the folks that have 200-300k Super cars, you're talking 20,000 a damn car. Not even rich people are happy to pay that, let alone us peasants just trying to breath regular air.