Toyota Motor Corp. and Mazda Motor Corp. said Friday they have started building a new $1.6 billion car plant in Huntsville, Alabama with an eye on starting operations in 2021 and creating up to 4,000 jobs.The new factory will have the capacity to produce 300,000 vehicles per year, with Toyota planning to manufacture Corolla cars and Mazda aiming to launch a new crossover model for the North American market.The plant marks Mazda's return to American manufacturing operations after pulling out in August 2012. It currently has a manufacturing plant in Mexico.In August last year, the two carmake…READ FULL ARTICLE