On March 31, the Trump administration announced it had finalized its roll-back of the Obama-era fuel economy standards for automakers. The administration says the move will save 3,300 lives, as well as billions of dollars in added costs. Several environmental groups have already promised lawsuits over the new rule, which requires that auto fleets average 40 mpg by 2026 — versus 55 mpg by 2025.
The Alliance for Automotive Innovation, which represents major auto manufacturers, said this week that progress toward manufacturing more fuel-efficient vehicles will continue regardless. 3/31/2020