California said on Monday it will halt all purchases of new vehicles for state government fleets from GM, Toyota and Fiat Chrysler and other automakers backing President Donald Trump in a battle to strip the state of authority to regulate tailpipe emissions. Between 2016 and 2018, California purchased $58.6 million in vehicles from General Motors Corp , $55.8 million from Fiat Chrysler Automobiles $10.6 million from Toyota Motor Corp and $9 million from Nissan Motor Company.