The National Highway Traffic Safety Administration says passenger airbags in some 2009 Chevrolet Impalas may have a potentially deadly flaw. Not only could the devices fail to inflate in a crash, but the inflator tube could rupture and hurl pieces of it at passengers. Sounds pretty bad, but there is good news for most Impala owners. According to NHTSA, the recall will only affect 79 Impalas, and not all of them will need replacement. Airbags found to be faulty will be completely replaced under the recall campaign at GM service centers.