Toyota readies robots for an Olympic bow

Toyota, as a top sponsor of next year's Summer Olympics in Tokyo, wants to roll out a fleet of high-tech robots that will take visitors to their seats, distribute drinks, retrieve thrown javelins from the field or even act as virtual immersive avatars for people unable to attend.But last week's preview of the first wave of gadgetry shows much work left to be done.Toyota has plowed billions of dollars into robotics and artificial intelligence for vehicles in recent years. But with just a year to