Devices for controlling the downforce generated by a vehicle during cornering

An automobile comprising:

• a first and a second flap provided on the underside of the automobile, the first and second flaps being positioned on either side of a centreline of the automobile, wherein each flap is deployable from a respective first position in which, when the automobile is in motion, each flap extends minimally into the flow of air beneath the automobile, up to a respective second position in which, when the automobile is in motion, each flap extends maximally into the flow of air beneath the automobile so as to reduce the downforce generated by the automobile;
• and
• a control unit adapted to receive one or more inputs that indicate the dynamic state of the automobile and select positions of the first and second flaps between their respective first and second positions, the positions of the first and second flaps being chosen in dependence on the said dynamic state so as to control the downforce generated by the automobile, wherein if the inputs indicate that the automobile is cornering, the positions of the first and second flaps are selected so as to counter roll of the automobile.