Could be handy if your looking to play catch and you are anti social.
In a collaboration of a mechanical engineering and psychology, two professors from Arizona State Universtiy have designed a robot that chases balls on a baseball field. Engineer Thomas G. Sugar and psychologist Michael K. McBeath have built a rolling robot that simulates the perception and prediction of a baseball player and can move at 30 feet per second to intercept fly balls and scoop up grounders.
[via Robot Gossip]