http://www.technologyreview.com/blog/helloworld/27390/
Typically, for robots to be able to articulate their rigid joints, roboticists have to include extra, slack wiring to accommodate the movement. A stretchy cable is more forgiving, eliminating the need for some of that slack. Asahi Kasei is also one of the world's major manufacturers of spandex (though under the brands ROICA and Dorlastan), so the company is very much at home in the world of the stretchy.
