This video is a test of iRacing using Oculus Rift VR. HDTanel is testing the Cadillac CTS-V at Silverstone while using the headset. The video is in Estonian, but the video is fantastic itself.
iRacing added peliminary support for the Oculus Rift VR Headset Development Kit in the most resent software update on July 27th.
Here is another video of HDTanel testing the Star Mazda at Spa.