Yes, you certainly can create your own teams. The car list provides documentation/proof that the car was actually a touring car in one of those series. It's basically my way of saying "these are all cars that raced in WTCC/BTCC/STCC in real life." Otherwise, it's fine to run Red Bull Racing again. However, by the way, RBR ran a SEAT from like 2002-2011. just tossing it out there.