>I would be curious about the energy needs per unit, though. An 180 lb person speed walking at 5 mph burns 650 Calories/hr. That's 80¢/shift in electricity. B

>I would be curious about the energy needs per unit, though. An 180 lb person speed walking at 5 mph burns 650 Calories/hr. That's 80¢/shift in electricity. But that's not the big savings. Humans need lights and air-conditioning – robots don't. http://www.youtube.com/watch?v=Fdd6sQ8Cbe0#t=5m40s http://www.youtube.com/watch?v=Fdd6sQ8Cbe0#t=5m40s