Erick Belmer has seen how tough the car business can be. He was working at a General Motors plant in Lordstown, Ohio, when it shut down in 2019, devastating the community.Mr. Belmer, an industrial mechanic, got another job at a G.M. transmission factory in Toledo, but his commute is now 140 miles each way. His schedule gives him just a few hours with his family and a few hours of sleep.Yet far from being bitter, Mr. Belmer says he is excited. G.M. is converting his factory to produce electric motors, part of an industrial transformation that will redefine manufacturing regions and jobs around the world.G.M., Ford Motor and other carmakers announced investments of more than $50 billion in new factories in …
