once in position beneath the cart, the agv gently lifts it off the ground and takes it away. powered by nickel cadmium batteries. >> they will get a charge in the battery area and go out for one service around the jail. and then they will return to the battery area to get a quick charge, usually about three minutes and it's ready to go. >> they deliver about 1,000 meals a day. this is a custom design that was designed specifically for the sheriff's department. and they're designed in this shape so they fit underneath the food carts. >> santa rita robots. this is how our meals are brought to us. >> some inmates even foresee a day when robots might just replace some other common fixtures at the jail. >> pretty soon they're going to have robots popping us out for pod time. no more deputies, just straight robots. >> that in turn will help the budget. >> that will help the -- >> deputy, do you see your job going the way of a robot? >> no, i don't think so. >> with silicon valley only 40 miles to the southwest, not everyone in santa rita is -- by the agvs. >> i wouldn't classify th