Here is the best candidate for a Walmart theme song, Wal-Martians by Dave Thomas.
After watching this video, and reading Gravekeeper's descriptions of SkyTrain passengers, I conclude that SkyTrain either picks up their passengers from Walmart, or delivers them there, or both.
After watching this video, and reading Gravekeeper's descriptions of SkyTrain passengers, I conclude that SkyTrain either picks up their passengers from Walmart, or delivers them there, or both.