Slightly Mad Studios just patched Project CARS to work with the HTC Vive and wow is it beautiful. This is just a multiplayer drive up the California coast but huge fun. Not racing. Just playing and testing things out. I'm running the HTC Vive and M0rt is running the Oculus Rift CV1. We are able to drive together perfectly. So cross-platform driving and racing. And, it gets even better. I'm in the USA and M0rt is in the UK. This drive was more scenic but we were racing as well and no perceptible lag that I saw. It's wonderful!.