how to make a 737

I just saw this awesome video from Boeing on the making of this 737 jetliner named Florida One. From the fuselage parts transported by train to the cabin to the cockpit, and finally the paintjob then to the sky, all squeezed into this 2 and half minute video.

I also discover that the workers there don't have to wear uniform. Some were wearing berms too. Contrast this to our local factory environment...