There is another factor not mentioned in the article. How does increased advances in automation change the relationship between the assembly line worker and the location of the company. Jobs don't necessarily have to move from high wage regions to low wage regions if the assemble line no longer exists as we know it today. Its not just that the plant worker is relocated?  Is it not more likely that American car plants will just replace the assembly line worker with much cheaper automated worker. No pensions, vacation time, sick benefits and most importantly no organized labour to deal with.  Its not globalization which increases the overhead cost but the need for having workers at all.