The National Highway Traffic Safety Administration held a public briefing Thursday to again recommend a recall of more than 50 million airbag inflators that have been linked to potentially deadly explosions. The inflators were produced by suppliers ARC Automotive and Delphi Automotive and were included in assemblies installed in vehicles from 2000 through early 2018 produced by 12 automakers, including General Motors, Ford, Stellantis, Tesla, Toyota, Hyundai, Kia, Mercedes-Benz, BMW and Volkswagen.