On February 8, 2021, the D.C. Circuit issued an order granting the Biden administration’s motion to stay litigation over Part 1 of the Trump-era Safer Affordable Fuel Efficient Vehicles (SAFE) Rule. The order was issued in Union of Concerned Scientists v. NHTSA (No. 19-1230) and consolidated cases. As detailed in our earlier alerts, Part 1 of the SAFE Rule rescinded the waiver EPA granted California to regulate vehicle greenhouse gas emissions and to implement a zero-emission vehicle program. Part 2 of the SAFE Rule finalized new standards for corporate average fuel economy (CAFE) and carbon dioxide emissions for passenger vehicles and light-duty trucks sold from model years 2021 through 2026.