DETROIT—Sales of GM’s Chevrolet Volt are picking up, leading the automaker to restart production a week early this month at its Detroit-Hamtramck assembly plant.

YORK, PA—For a look at what’s to come for Harley-Davidson Inc., the best place to start is the company’s largest motorcycle factory, where change has been described as “leaning into a hurricane.”

ANN ARBOR, MI—Toyota will hire approximately 150 engineers, technicians, advanced researchers and scientists in the United States by the end of 2012.

STATESBORO, GA—A Great Dane plant that will assemble refrigerated trailers has opened for production. Expected to employ more than 400 people, the plant is equipped with automated equipment for welding, dispensing and material handling.

DETROIT—The global market for rechargeable batteries is projected to reach $21.4 billion by 2017, according to a report by Global Industry Analysts.

LOUISVILLE, KY—Both newcomers and veteran Ford workers alike are going through training on what the carmaker calls the most modern tools in the industry. Each employee will spend at least 40 hours in the training center.

HERMOSILLO, Mexico—Ford Motor Co. will invest an additional $1.3 billion in its stamping and assembly plant here. The investment will create 1,000 new jobs.

LIVONIA, MI—A123 Systems will spend $55 million to replace thousands of faulty battery packs for electric and hybrid vehicles.