NHTSA Determines Chevy Volt Batteries SafeThe National Highway Traffic Safety Administration (NHTSA) has finally closed the months-long investigation into unusual post-crash battery fires occurring in GM’s Chevrolet Volt. CopyFacebookXTruthGettrLinkedInTelegramEmailSaveThe Chevy Volt, which won North American Car of the Year award for 2011. Robyn Beck/AFP/Getty ImagesBy Paul Darin1/22/2012Updated: 10/1/2015Print