Is this something new? I haven't seen it before. Maybe we will get paid DLC in the future, Pikes Peak or something like that, that is not directly connetced with sport mode and won't affect online competitions.
I received a few at the start, codes came with the collectors box.
The Pikes Peak Audi was one. R18 TDI (Gr.1) and something else I can't remember but I've got duplicates of all of them now. Can't sell them either. Essentially the same as a daily gift car.