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Is there any strategy or reason to draft another car in NASCAR races?

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It saves fuel since the car in front has to spend more energy to cut through the air resistance while the car drafting does not (as much).

The low-pressure wake behind a group's leading car reduces the aerodynamic resistance on the front of the trailing car allowing the second car to pull closer. As the second car nears the first it pushes high-pressure air forward so less fast-moving air hits the lead car's spoiler. The result is less drag for both cars, allowing faster speeds.

Drafting (aerodynamics)

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