The US' National Highway Traffic Safety Administration is still poring over findings from both the Senate and a parallel report from a car manufacturer group, but it's entirely possible (if not probable) that the recalls will range even further as a result. Some, such as Florida Senator Bill Nelson, even believe that there should be a blanket recall of any Takata airbag that uses ammonium nitrate to expand in a crash. The automaker group's study concluded that the airbags explode through the combination of ammonium nitrate and a bad inflator assembly that lets moisture creep in -- drive in humid weather and those airbags can become weapons. Newer nitrate mixes might avoid this, but that may not be good enough to assuage critics.