Honda Motor Co, facing a U.S. Japan’s third-biggest carmaker said late on Thursday it was adding to its recall an undisclosed number of cars from model years 2001-2006 that were sold or registered in humid areas where the air bag inflators are thought to be most vulnerable to rupture. Honda said “it is not aware of any claimed injuries or fatalities that have been confirmed” related to the issue. The action, upgrading Honda’s “safety campaign” to a formal recall, comes a day after U.S.