You didn't ask about state-of-the-art in Sim racing right now, but it's worth knowing. The biggest sim-racing development of the last 24 months has been DIY motion rigs. The SFX-100 system and its variants allow a dedicated enthusiast to build a professional-quality, 3DOF motion system for 1/10 the cost of the commercial rigs.
Combine this with VR, and the immersion is unreal.
