We have talked about "the" video at Wal-Mart. I'm willing to bet there are SEVERAL videos from Wal-Mart. Wal-Mart has a TON of cameras in the parking lot, throughout the store, at the registers, at the doors...
So, I bet he was on video getting out of the truck, walking into the door, selecting his items, checking out and paying for the items, walking out the door, and getting back into the truck.
That's a lot of video IMO.
But, was it really him?