Continuity mistake: Mike Ehrmantraut takes Jesse to a house in the desert. He pulls up behind a dark blue car, which vanishes in the next shot, and then reappears.
Continuity mistake: When Jessie, Victor and Mike pull into Gus' chicken plant they pull up behind Gus' car, but when they get out the car is gone, and when they start to walk to the building the car is back.
Continuity mistake: When Mike throws the shoe, it lands well past the end of the wall. Camera cuts and it's back level with the end of the wall. (00:16:20)
Chosen answer: It is part of the ritual for la Santa Muerte. It is a sign of humility and sacrifice.
djm