From "Equinox - The Engines that came in from the Cold" about the secret soviet moon program, i linked to the staged engine they built, and that they got working.
http://youtu.be/BLg1QUq5GQM?t=14m21s
I saw an interview where Musk said the rocket cost $50M to build but the fuel was about $100-200K so a few kg less to orbit would be ok if they could relaunch quickly.
but i did lol a little when i saw the legs push out from the rocket, when i think reusable i think drop it in the sea and have a boat go pick it up not land on the pad you just fired it from.
if this works out United Launch Alliance with Boing and the rest can just quit the rocket business, its like the intro to Patton "You know i actually pity those poor bastards we're going up against. By God, I do. We're not just going to shoot the bastards. . ."
what the...
not only does this stuff work, there are eaven people using it so we know its safe.
i never heard of this use of phage so thank you for posting it.