A worker is seen in front of a wall featuring photocatalytic …
(AP) - A worker is seen in front of a wall featuring photocatalytic technology to reduce discoloring from pollution at Toyota Motor Corp.s Tsutsumi plant in Toyota city, central Japan, Wednesday, July 2, 2008. Tsutsumi plant has also solar panels, grass growing on the roof and ivy crawling on walls. The Japanese carmaker wants to be as known for green manufacturing as it is for the easy-on-the-gasoline Prius hybrid. (AP Photo/Shuji Kajiyama)