The Kress Hauler is a very specifically designed vehicle, it has one purpose, to handle Kress Pots. Not only are they designed to move them they also have the ability to raise them up and dump them out. This can be accomplished because the pots are top heavy. Once raise up the hauler starts tipping the pot hydraulically then, at a certain point, gravity takes over and the pot tips completely allowing the rim to hit the ground jarring the material out. Then the pot is pulled back into an upright position ready to be filled again.