My prediction: Valve VR will be the choice for hardcore games/gamers. Oculus VR will shift focus to more casual gaming (quick, fun, not graphically superior), and more importantly media consumption (think: Facebook live 360 video of major media events like E3, or ComicCon, and eventually paid subscription for viewing of live sporting events like courtside NBA games)
This. Facebook is more interested in VR for sports, messaging, telepresence, news, ads, and entertainment media than it is for games.
Downside of that strategy is that the Valve/Vive bloc could produce radically superior technology because gaming creates seductive technical barriers to overcome. FB's intended uses do not.
Either Indy or F1 recently had a 360 degree view of the race from the top of the car. I could imagine some fans would love that for all types of racing (NASCAR included). Just turn your head to look left/right.