Regulatory agencies across California have been ordered to stop buying gasoline-fueled vehicles from several major automakers that have joined the Trump administration’s opposition to the state’s stricter transportation emissions rules.

With the exception of some public safety agencies, the state plans to not buy new gas-fueled vehicles from General Motors, Fiat-Chrysler and Toyota.

Gov. Gavin Newsom said automakers on “the wrong side of history” will be cut out of California’s lucrative automobile market, the biggest in the nation. Newsom noted the state is moving away from internal combustion engines and the use of fossil fuels.

California, he said, “is finally making the smart move away from internal combustion engine sedans. We are aligning our investments with our carbon-neutral goals and raising the bar on eliminating harmful emissions.”

California has been locked in an ongoing battle with the Trump administration regarding its transportation air emissions and fuel efficiency requirements.

Deputy Director Monica Hassan of the California Department of General Services (DGS) said a follow-on policy initiative is under development to require vehicle purchases only from Original Equipment Manufacturers (OEM) that recognize the California Air Resources Board (CARB) authority to set greenhouse gas (GHG) and zero emission standards.

DGS Director Daniel Kim said the agency, which handles bulk car purchases for state and local government jurisdictions, intends on “doing our part to achieve California’s climate goals.” Kim said the current action is “one of many steps taken to drive demand for green vehicles.”

Also last Friday, California took legal action to challenge the Trump administration’s regulatory attempt to stop the state from restricting GHG auto emissions. “In court and in the marketplace, California is standing up to those who put short-term profits ahead of our health and our future,” Newsom said.

In September, Newsom signed an executive order to advance the state’s environmental agenda that includes generating 100% renewable energy by 2045 and adding five million emission-free vehicles by 2030.