Duffy ordered his chief of the National Highway Traffic Safety Administration to "propose the rescission or replacement of ...

He has publicly questioned climate change. The NHTSA chief would have to initiate a full rule-making process to set looser standards, which took two years during the first Trump administration.

Duffy said the rules need to better align with the administration’s overarching agenda because “the existing CAFE standards promulgated by NHTSA are ... to address climate change, which ...