FILE - Transportation Secretary Pete Buttigieg speaks during a press briefing at the White House, March 27, 2024, in Washington. New vehicles sold in the U.S. will have to average about 38 miles per gallon of gasoline in 2031 in real world driving, up from about 29 mpg this year, under new federal rules unveiled Friday, June 7, 2024, by the Biden administration. "Not only will these new standards save Americans money at the pump every time they fill up, they will also decrease harmful pollution and make America less reliant on foreign oil," Buttigieg said. (AP Photo/Evan Vucci, File)