This is the first step. Online collaboration and then Walmart buys AAP - this is just my prediction and we had a long thread on this topic a year ago. We'll see what happens and Walmart pulls the triggered - they have to as Amazon will move into this area and then you have a problem - Walmart has to act asap.
I do not have any insider information so treat this wit a grain of salt. I've worked as a consultant for both companies on the ecommerce side. Good luck to all.