GM says goodbye to a popular model after 57 years

General Motors , according to documents filed with the state of Michigan, will lay off just over 1,300 workers at two of its Michigan plants early next year. The larger round of layoffs — 945 workers at GM's Orion Assembly plant, which produces Chevrolet Bolts — won't begin until Jan. 1. GM said in October that it plans to convert the Orion plant to electric vehicle production in 2025.