Could Wal-Mart make E85 a true alternative?

Recently car companies - mostly American companies Ford & GM - have started advertising how many Flex Fuel cars, that can run on regular gas or E85 Ethanol, they are making and how that's great for the environment (plus it's 105 octane, which as I understand it is better for cars than the 87 octane most of us run our cars on - maybe BH can clear this up for us). My big statement when I see these commercials is: that's wonderful but you can't buy the stuff anywhere. Well, Wal-Mart may be about to change all that by introducing E85 to all of its gas stations as well as to all the contracted gas stations located in their parking lots. If they were to do that and the price was low enough it could start to put strain on the major gas companies to start selling it themselves. This would likely become more and more the case as more cars are produced that can run on E85, which would also be good for Ford & GM. Perhaps Wal-Mart's clout could help to move Americans away from foreign oil.