In a significant modification of prior regulations, the newly appointed U.S. Transportation Secretary has announced plans to rewrite and roll back the fuel economy mandates established during the Biden administration. This action aims to ease restrictions on vehicle emissions and fuel efficiency, with a specific focus on rewriting the Corporate Average Fuel Economy (CAFE) standards. Transportation Secretary Sean Duffy has indicated that these changes could lead to an increase in fuel costs, estimated at $23 billion, while also raising concerns about the implications for environmental standards and vehicle safety. Critics assert that the rollback will favor the oil industry and undermine efforts toward cleaner vehicles.