A group of automakers, including General Motors, Toyota and Fiat Chrysler, is siding with the Trump administration in the ongoing fight between Washington and California over car fuel efficiency standards. California has sued the Trump administration after it revoked California’s right to set pollution limits on cars. A slew of other auto manufacturers, including Ford, Honda and Volkswagen, have sided with California in this battle. The ongoing dispute has left auto giants grappling with which fuel efficiency standards to follow over the coming decade.