For an innovation that has changed car performance so much, the diffuser (circled) is remarkably anonymous. These bits of aerodynamic genius are visible only from the back of the car, hidden in the ...

Aerodynamics plays an important role in a vehicle's handling, especially when a vehicle is at speed. The faster a car goes, the more air interacts with elements like the bodywork, front and rear wings ...

Well, OK, it doesn’t do everything. But it does more than could be expected of any typical diffuser. The diffuser is a chunk of bodywork low on a car’s rear end, usually shaped to manage airflow, ...