Before the first all-new F-150 was built, Ford engineers used computational fluid dynamics to simulate airflow and air pressure around the truck to find the best combination of tough looks and aerodynamic design. This image shows how the air flows smoothly over, around and under the truck. Certain elements work together to smooth airflow, such as the wide trapezoidal surface at the top of the tailgate working with the chamfered roof to direct air over the box cleanly and efficiently.