General Motors Co. has settled with the Biden administration after allegations that nearly 6 million of its vehicles emitted more emissions than originally reported. This settlement involves retiring 50 million metric tons of carbon credits to offset the pollution. The U.S. Environmental Protection Agency investigation focused on certain 2012-2018 model year GM vehicles, which were found to emit over 10% higher levels of carbon dioxide than initially claimed by the automaker. This case highlights the importance of accurate emissions reporting in the transportation industry and emphasizes the need for transparency and compliance with environmental regulations.