If the demonstration plant works as well as hoped, the plan will be to build combined electricity and hydrogen generating stations in locations where there are geological formations containing saline water overlain by a thick caprock serving as a seal.
Beyond acting as a demonstration of how a first-person shooter works in VR, it's a pretty strong warning that ports of existing games don't necessarily take advantage of the Rift's strengths.
Most importantly, it works impressively well, which was amply shown by the demonstration we were given with the device permanently submerged in water at the booth, streaming its audio to another device.