I have a very limited understanding of rules in general. Formula 1 rules are a particular mystery, and yet it’s often by bending these that teams win. Sometimes a tiny change can have a large effect.
Today’s invention is a subtle change which might give someone a worthwhile advantage (and which may only be allowed in certain forms of motor racing).
As the green car travels around the grey curve, its air intake (blue, towards the back of the car) is at a slight angle to the direction of motion (red).
Having an intake which can swivel automatically, so as to continually align with the direction of motion would give a very small, but perhaps important, increase in airflow and thus performance.