General Motors said on Monday it was reversing course and will no longer back the Trump administration’s effort to bar California from setting its own emissions rules in an ongoing court fight.  GM Chief Executive Mary Barra said in a letter to environmental groups it was “immediately withdrawing from the preemption litigation and inviting other automakers to join us.” The about-face came as GM sought to work with President-elect Joe Biden, who has made boosting electric vehicles (EVs) a top priority. The Detroit automaker has laid out an ambitious strategy to boost EV sales and last week said it will increase spending on EVs and autonomous vehicles by 35% from […]