This Wasup concept is a combo of a washing machine and a toilet, reusing the water that cleans the clothes in the washer to flush the toilet. It's a smart idea, as no one cares what's in the water they're about to pee into. It therefore conserves lots of water that would normally just be flushed away.
It's also smart in that it saves space for apartment dwellers, sticking the washing machine above the toilet and saving the floor space that the appliance usually takes up. Of course, you'd worry about dropping your clean clothes in the toilet, but as long as you're careful and coordinated this looks like a pretty great idea that I could see many people wanting.