Order Status - What does Paint Shop Mean?

[caveatesq]

I have been tracking the production of my wife's new X5 over the last few days. As of yesterday, the automated system said that the car was in production with an estimated completion date of today. I called again this morning and the system said that my car was in the paint shop still with an estimated completion date of today. I'm confused since the bodies are painted prior to assembly why would the car first be "in production" and then in the paint shop? Is the paint shop the final production step?

Thanks