In 2006, Belgian conceptual artist Wim Delvoye introduced the world to his "Cloaca Machine", a mechanical art work that actually digests food and turns it into excrement, fulfilling Vaucanson's wish for a working digestive automation. Many iterations of the Cloaca Machine have since been produced; the current iteration sits vertically, mimicking the human digestive system. The excrement produced by the machine is vacuum-sealed in Cloaca-branded bags and sold to art collectors and dealers; every series of excrements produced has sold out.