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I dont see the innovation. Those things (bun, PB, jelly packets, laffy taffy) would all last just as long outside of the can. The can does nothing to extend their shelf life.
Dunno, I thought it would be something more spaceage.
Well being that NASA is still putting shuttles in to space that were built in the 60's this would seem to fit right in with being "space age" since this is an old idea with just a minor tweak.