That's pretty funny!
I haven't biked to any Walmart in the area, but I've stopped by Target a few times (right next to my employer), and they have a very nice bike rack. The two Kroger stores I use both have bike racks (one is very nice and solid, the other one is cheap and crappy). No racks at the new and fancy HEB though. Wonder if they'll get the message if I bring the bike into the grocery store....
Sverre