It seems to me that history is quite a lot of fiction...
Not a programmer I'm afraid
Solar grass? I want to plug my lawn into by house and generate power.
I don't think 640x800 will be a problem. That's per eye for a start and not focusing on a single screen image. Plus this will work differently, it will wrap around your vision.
Really I'd like to see this paired with Tobii eye tracking http://www.tobii.com/ which looked amazing the last demo I saw on line. You could maybe boost the detail where ever the eye look,s like normal eyes work, but I was thinking more game interaction since you can react and interact faster with something on screen just by looking - they should have this in main stream gaming co op games would really take off - i.e highlight an area of interest to your partner, or attack an enemy, or block an incoming attack, trace a path to use with your eyes. [or look in a direction and press a button to move towards it, movement seem to be the biggest problem this would be quit novel] etc.
Second, paired with Leap http://leapmotion.com/ http://www.wired.com/gadgetlab/2012/05/gesture-controls-get-a-huge-boost-with-new-leap-interaction-system/ if one was placed on the headset facing down it could track arm and hand positions.
Then if you could track the headsets location in a room you could design games around an arena with real movement. Now that would be awesome.
You heard it here first.