<resurrection ..whosoever liveth and believeth in me shall never die..(reaches for more graveyard powder)..whosoever liveth and believeth in me shall never die...(passes a chicken* over the bytes)>
Right, having resurrected this idea temporarily...I do seem to remember being told off on here,
for a lightweight hydrogen storage system, being a bag, in a bag, etc,
Each layer inwards is pumped up to a higher pressure allowing the innermost bag to be very highly pressurised without blowing the recursive bag to bits.
I mention this now, as I finally got around to reading Seveneves, and Stephenson mentions a similar system for cosmonaut's rest area. Now, he could just be making it all up...
* Actually it was Quorn. It's the cutbacks, y'know.