Like Pirelli World Challenge, the Blancpain GT series has a ton of different cars, all competing on the same track. Blancpain GT uses GT3 cars as well, making it a wonderland of variety. They've recently struck a deal with PWC to bring Blancpain GT champions to America. Rejoice!
If you've ever wondered why pants-on-face-bonkers supercar manufacturer Lamborghini doesn't really have a factory racing effort, well, they're about to fix that. They're developing a Lamborghini Huracán for FIA GT3 racing. You're welcome.