Guerilla Marketing - For a cause. From Feed SA a South African charitable organization that operates food programs to the poverty-stricken in SA townships. The cart's handle bears the tagline, "See how easy feeding the hungry can be?
This is cool, the escalator has been turned to look like an iPhone screen with a whole range of apps. This is advertising apples endless apps. It would be hard to miss this whilst you are travelling up the escalator.