National Geographic goes under the hood to inspect today's Dodge Challenger an American classic reborn 40 years after it's inception. Loud, curvy, and packed with power, the modern version of the 70s classic stays true to it's roots, and adds technology and 21st century engineering into the mix. Explore the 3 million square foot Canadian assembly plant that pumps out 900 Challengers a day. Then, visit the state of the art plant in Mexico that crafts the iconic Hemi engines that power most Challengers. And, witness the marriage of car and engine, as a synchronized process of human and robotic expertise ensures each Challenger passes a 30 point inspection.