If you love going fast - and staying alive - then you love science. We spend some time with a physicist and learn all about the invisible forces keeping drivers in their seats, cars glued to the track, and NASCAR as competitive as ever. We talk with the expert technicians and specialists making advancements in the garage to shave seconds off drivers' times. And we hang out with Kevin Harvick's crew to learn how real-time experimentation can change a race.

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