Jeff Gordon was featured in a recent Fox Sports video, showcasing his experiences behind the wheel of Chevy's sim! Notice the familiar sim http://simracingpaddock.com/rfactor2/check-jeff-gordon-behind-wheel-simulator/
http://www.rfpro.com/ It's rFactor with enhancements for running in an industrial multi-CPU environment (such as the simulator Jeff Gordon is seen driving), often tailored for the client. rF2's tire model is a descendant of rFactor Pro. rFactor Pro used to be wholly owned by ISI, but now it is a separate company with ISI providing them occasional support, somewhat similar to the current arrangement ISI has with Studio 397.