The US Department of Transportation initiated a public comment on a plan to relax future CAFE standards, lowering the 2031 requirement to 34.5 miles per gallon from the previous proposal, in the midst of widespread debate over affordability and energy policies.

The US Department of Transportation initiated a public comment on a plan to relax future CAFE standards, lowering the 2031 requirement to 34.5 miles per gallon from the previous proposal, in the midst of widespread debate over affordability and energy policies.