The "autonomous" part is the problem. Any robot capable of hauling "1000 pounds of linen" would probably be pretty heavy itself (batteries, motors etc) and can

The "autonomous" part is the problem. Any robot capable of hauling "1000 pounds of linen" would probably be pretty heavy itself (batteries, motors etc) and can probably crush your toes if it runs over them, even at low speeds. I guess that means just adhering to the first law preventing injury to humans.