Harvard University funded by the Pentagon has a new Soft Body Pneumatic Prototype Robot that can squeeze through tight spaces. The robot is about 5 inches long and moves when air is pumped in and out of bladders on the legs and body. As the bladders are methodically inflated and deflated various walking, crawling and slithering gaits can be achieved. Although the device does not appear to be autonomous yet, it has a notable spineless Elastic Polymers soft body form factor which may someday be useful for squirming and slithering through tight spaces for search and rescue.