Amazingly, Toyota has claimed that they actually are going to enter the Prius into Super GT as a race car! I don’t have much proof yet, but I’m going to look into it.
It would make some sense, as Subaru is going to create a BRZ Super GT car, and there is no reason to have two of the same cars on the grid with just a different badge on the nose.
Props to Jon Sibal for the sketch. This man is hugely talented.