The Blood Robot

On my way to the elevator in the UCSF hospital I saw an interesting sight. There was a robot cart heading for the elevators, that was announcing that it was getting on the elevator and not to get on with it. Two medical people were chasing it and kept hitting the stop button. When they hit the stop button it would say that it would stop for 30 seconds. While it was stopped they were desperately trying to open it's lock code to get inside. The robot made it all the way to the elevators before they got the access code through a phone call. They pulled out a cooler container and it promptly summoned an empty elevator and went inside.
It brought back thoughts of all the books and movies where man created robots take over the world. For a while it seemed like the robot was winning, but eventually man prevailed!