Plates for each state are different rules. Insurance is completely different as well.
In Arizona, any car 25 years old can get the "Historic" plates. No limitations other than it being 25 years old. So yes I see Saturn's with them. You also get no relief from emissions. it is simply a collectible plate.
Classic Car Insurance, That is a whole different story. Your car has to be done up nicely. It also can't be your daily, you also have to own a garage. There are mileage limits and you get the emissions exempt in many states. You come to an agreed value. On mine we agreed at 21k and that was before my body and paint. I am working with them now that my car is being done this week to raise that number to 35k.
