The Supreme Court ruled Friday that fuel producers have standing to challenge EPA approval of California vehicle emissions and electric vehicle policies. Why it matters: The 7-2 decision enables more lines of attack against California officials,

In a significant blow to California's ambitious electric vehicle mandates, the Supreme Court today sided with oil companies, ruling 7-2 that they can proceed with their lawsuit challenging the state's regulations.

It’s unclear what impact the justices’ ruling will have on carmakers who must adjust to market conditions as the state's vehicle emissions standards have flip-flopped between administrations.