One thing that impressed me all the time was that any small improvement, when done at Walmart's scale, meant big numbers. I don't remember the specifics, but w

One thing that impressed me all the time was that any small improvement, when done at Walmart's scale, meant big numbers. I don't remember the specifics, but when one guy figured out how to make the printed receipts use less paper, that was millions of dollars saved. If Walmart can save a little bit per truck using these trucks, it'll be big savings.