Ford Motor Co. is recalling 1.1 million pickup trucks because the gas tanks can fall off and cause fires. The National Highway Traffic Safety Administration said Monday on its website that the metal straps holding the tanks can rust, allowing them to fall, rupture and catch fire. The defect has been blamed for eight fires, three of which spread to the rest of the truck. One person was injured, suffering first- and second-degree burns, Ford spokesman Wes Sherwood said.