"The latest entrant is a human extraction bot, designed to do the heroic fireman thing without risking the lives of any actual, uh, men. Operated by remote control, it gets into hot, wet or earthquakey zones, finds the unconscious humanoids and devours them for later regurgitation."

http://www.engadget.com/2009/08/12/video-rescue-drone-swallows-humans-carries-them-to-safety/

Check out the pictures... now how are the injured/unconscious humans supposed to get into that funnel thingee? And will it fit XXL folks?

Pair this thing up with the robots that devour the dead for fuel and we're in big trouble.