There are mixed emotions in the automotive industry today as German automaker Volkswagen announces a new factory in Tennessee, and General Motors launches a cost cutting plan involving the loss of thousands of jobs.   VW has opted for a site in Chattanooga, Tennessee in preference to possible locations in Alabama and Michigan. The plant is expected to be worth $1 billion to the local economy. "This project will have a significant impact on the economy of Tennessee and the region for decades to come," said Tennessee Governor Phil Bredesen.