F1 Cars Rarity

I've noticed that F1 cars gave different rarities some have rare other have legendary and other have 1 of 1 , I think it would be great to set one rarity for the F1 cars , I suggest the 1 of 1 Rarity because there are not production cars and almost every race they change something in the car and also the 2 drivers car are not exactly the same in F1 , in the F2 it is different