I am not a great admirer of Walmart - however, this story shifted my inclination quite a bit. Walmart's slavish obsession with cutting costs produces environmentally friendly results (now often) inadvertently. Wish Walmart figures out a way of twisting the arms of Big Oil and Big Auto as well !
On a different note, media has reported that Toyota might most probably overtake GM as the world's largest automaker in 2007, a position that GM has held for 81 years. The win is symbolic for the Japanese firm that learnt most of its early tricks from the American firm it is beating up now :). The last few years had already indicated that Toyota would be leading the pack !