DETROIT—General Motors Co. will no longer back the Trump administration in its legal battle to strip California’s authority to set its own fuel-efficiency regulations, saying GM’s goals for green cars are aligned with the state and the incoming Biden administration.
In October 2019, GM intervened in a lawsuit filed by environmental groups challenging the Trump administration’s decision to revoke a federal waiver that allows California to set its own tailpipe-emissions standards. GM was joined by Toyota Motor Corp., Fiat Chrysler…
