United Auto Workers members leave the Fiat Chrysler Automobiles Warren Truck Plant after a shift on May 18, 2020, in Warren, Mich. Car sales are picking up again, but auto makers face a problem: getting enough workers.

United Auto Workers members leave the Fiat Chrysler Automobiles Warren Truck Plant after the first work shift, Monday, May 18, 2020, in Warren, Mich. Fiat Chrysler Automobiles NV along with rivals Ford and General Motors Co., restarted the assembly lines on Monday after several week of inactivity due to the corona virus pandemic. (AP Photo/Paul Sancya)