Who says car factories have to be dirty? Volkswagen built a car factory in the middle of the city of Dresden called the Transparent Factory. The factory actually replaced a convention center and attracts tourists and people wanting to buy a car. The factory workers wear white, there is no pollution and the car production process is visible with glass everywhere.
As you can see in the video above, the car plant uses the city's street car networks to deliver the car parts. McLaren has another very clean building that you would be surprised actually made cars. There is a video of that plant below the fold.
Can you imagine a future where American's rust belt is a clean, modern, tourist attraction?