Wind tunnel testing measures how air flows over the car body surfaces. Teams place a vehicle in a large tube with massive fans. High speed air mimics the conditions of driving on a real track. Sensors record the amount of downward force and air resistance created. One team tests a new front bumper shape to increase speed. This data helps engineers design body panels that cut through the air. Better aerodynamics allow the car to reach much higher top speeds. These tests happen at private facilities away from the actual race tracks. Every modern racing team uses this technology to improve overall vehicle performance.
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