Who else had to google it? Hard to find an image of it, but finally found it over at the museum where it resides. Art.nelson-atkins dot org and search for object F86-57
..cart maintenance is contracted out. The store employees have no control, except for the loss of control and crashes out in the back while doing cart races..
..that would help with the first 3 panels, but the 4th comes winging out of no where, and is actually a new tangent. Such is Skin Horse..