Despite a long string of recalls that began more than two decades ago, about 6.2 million vehicles with potentially dangerous Takata air bag inflators remain on U.S. roads today.
On Wednesday, Nissan warned drivers of about 84,000 older Nissan and Infiniti vehicles not to drive them because the front passenger inflators can explode with too much force in a crash, spewing metal fragments that could kill or injure people.
