I agree, the Welt is spectacular. What's amazing about the Leipzig factory is that the cars under assembly are moving through the administration area with no sound. You can walk about, converse and work without sensing that the moving line is a disturbance. Anyone wanting an impression of BMW quality can just be placed on the mezzanine there - no words will be necessary, excellence demonstrated.
Hadid's goal was to unite management and production, creating a cohesive union (pun intended), and she said that the building would become part of corporate communication for the brand.
Which is also what The Farm does in Struer ... it's quite a thing to be driving in from the airport and suddenly see that building out on the field, at the end of the factory-units.