About 13,000 U.S. auto workers stopped making vehicles and went on strike Friday after their leaders couldn’t bridge a giant gap between union demands in contract talks and what Detroit’s three automakers are willing to pay.

Members of the United Auto Workers union began picketing at a General Motors assembly plant in Wentzville, Missouri, a Ford factory in Wayne, Michigan, near Detroit, and a Stellantis Jeep plant in Toledo, Ohio.

It was the first time in the union’s 88-year history that it walked out on all three companies simultaneously as four-year contracts with the companies expired at 11:59 p.m. Thursday.