Imagine a passenger in your car that is never wrong with directions, keeps you in good spirits and will check your e-mail while you're driving. That vision of the future was presented by Nissan Motor at the Tokyo Motor Show 2007. Of course, this passenger isn't a human being but a small robot called Pivo-kun. Mounted in the dashboard of the company's Pivo 2 concept car, the robot is more than just a toy and has an important safety role to play. Using cameras in its eyes, it can determine if the driver is under stress or tired and suggest a rest.