This is just a variation of different ways you can use packaging and bags in particular to advertise you product or a message. I found them quite amusing and just simplistic. I find it a great way to advertise through promotional ways.
This is so attractive advertising idea, isn't? If you are around you wouldn't be able not notice it. But if you have to have shower you would remember for good. Every time you would be getting drinks in fast food restaurants you would remember it with a smile. It doesn't mean you will become a big fan of Sprite, but never knows.