[spectre]

I'm dubious of how such a system would stand up during an earthquake. As a member of Civil Defence in a city that was recently struck by a 7.1 magnitude earthquake (http://en.wikipedia.org/wiki/2010_Canterbury_earthquake) it was remarkable how with just a bulldozer any damaged transport routes could be returned to mostly usable condition. I shudder to think what would happen if we had been reliant on something like these foodtubes, image how long a minor displacement would take to fix.