Toyota Motor and Mazda Motor are expected to unveil plans for a $1.6 billion assembly plant in Huntsville, Alabama, sources familiar with the matter tell CNBC.

The plant, which will build the Toyota Corolla along with other models, is a huge win for President Donald Trump’sadministration which has made a point of stressing it would add manufacturing jobs, especially in the auto industry.

The plant is projected to employ about 4,000 workers and produce approximately 300,000 vehicles a year.

A spokesperson for Toyota declined to comment to CNBC.