Nat Geo megafactories-Dodge Challenger&Mercedes Benz

NGC goes under the hood to inspect today's Dodge Challenger an American classic reborn 40 years after its inception. Infused with nostalgic design and modern amenities, in just 20 hours this muscle car is fit to burn asphalt. We explore the 3 million-square-foot Canadian assembly plant that pumps out 900 Challengers a day across 20 miles of conveyer belts. Next, NGC treks to the Mexican factory that builds the Challenger's famed hemi engine.

Mercedes Benz


Go inside Mercedes' largest German factory to see what it takes to build the 571-horsepower Mercedes SLS. Computers control everything in a Mercedes with more than a mile of wiring in each car, but to create the fastest Mercedes to date topping out at 197 mph it takes some of the best engineers in the world to mold a light yet strong supercar in 15 hours

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