What is the biggest car manufacturing town in world?

There isn't a single town that definitively holds the title of "biggest car manufacturing town in the world." The automotive industry is spread across many large cities and regions, often involving multiple manufacturers and numerous plants within a broader metropolitan area. Detroit, Michigan, is often cited historically as a major center, but its dominance has lessened. Today, it's more accurate to talk about major *regions* or *metropolitan areas* with high concentrations of car manufacturing.