If you haven't already seen it, here's National Geographic - Ultimate Factories Collection (2010) for BMW (they have them for Audi, the Corvette, etc)

Ultimate Factories Collection
Go behind the scenes as National Geographic explores manufacturing goliaths and brings to life some
of the greatest one-of-a-kind factories in the world. From an inside look at the making of BMWs
newest sports car and Corvettes latest high performance, aerodynamically-efficient street machine,
to a tour of Caterpillars six mega-plants and Budweisers state-of-the-art brewing factory, this
collection of 11 popular episodes offers exclusive access into the world s Ultimate Factories.

Part 1: BMW
BMW stands for Bavarian Motor Works. So youd expect the Bavarian town of Landshut, Germany to be
the place where BMW transforms liquid metal into lightweight engine crankcases. Youd also expect
BMW to precision assemble its high-performance 3.0 liter six-cylinder engines in the Bavarian city
of Munich. But most people dont expect BMW to ship some engines across the Atlantic Ocean to BMWs
first full manufacturing plant outside of Germanyin Spartanburg County, South Carolina.

Download it here, it's free, and use either VLC player and/or MPC player (two players that kill Windows Media Player in terms of quality, the ability to play everything, and ease of use:
National Geographic Ultimate Factories Collection: BMW