a USSE/SSTP pump point was that Wal-mart could use the machines to process waste, either on site or off....make their own fuel right there at the store, think how much money Wal-mart would save, 8B Wal-marts, thats a Google-Plex dollars per nanosecond!!!!
(I'm exaggerating a little....we all know there are only 7B Wal-Marts)