Toyota shows off smart-grid technology for plug-in car

A monitor screen of the Toyota Smart Center shows the battery of a Toyota plug-in hybrid has been charged 40 percent so far and can run 9.4 kilometers (5.84 miles) during a demonstration of Toyota's new smart-grid technology for its plug-in vehicles at Toyota Motor Corp.'s showroom in Tokyo Tuesday, Oct. 5, 2010. The Toyota Smart Center allows people to see on TV screens and mobile handsets how much electricity is being consumed by a household, how much a plug-in vehicle has charged, and how much electricity has been stored in the home. (AP Photo/Yuri Kageyama)