Nice Z. I sent a letter through Walmart's website around a month ago, suggesting they contact JR about testing the fuel for their fleet of trucks. I suggested they try it and that if implemented, they could tout being the first major company (that I'm aware of) to be running all clean fuels. They have a lot of trucks.
Maybe you could send this brochure and similar such comments to Walmart as well.
I don't know if JR is ready for that, but it could be a very good deal in time.