Here in Michigan it's a "historical" plate, which can either be a new plate designated as such, or a plate from the year it was made. Unfortunately, the usage restrictions are so severe that it's pointless for anything more than a garage queen in my opinion. Holidays, club meets, and the month of August. People do drive them more, but they're at risk of getting in trouble if a leo decides to pull them over and they're outside of those categories. I'd rather not get in trouble because I decided to drive my "historical" car to work on a Tuesday.