http://www.xbitlabs.com/news/monito..._Samsung_Shows_Off_Flexible_OLED_Display.html One of the possibility that I can imagine, given the hardware is affordable/cheap enough for general public consumption, is to create a screen attached to helmet visor. Maybe it will be a better solution than goggle type head mounted displays.
When available for the masses, this flexible display can be used together with FOV2GO, using Razer Hydra for the head tracking. And if you want to build your own Oculus Rift type HMD, go to http://www.mtbs3d.com/phpbb/viewtopic.php?f=140&t=15247 I'm surely will try to build my own HMD. Videos: Sixsense's Razer Hydra, 6 DOF motion tracking