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Ferrari says the 599XX features a "plethora of aerodynamic, electronic control and handling innovations used together for the first time on a single car, making this model a genuine technological laboratory." One of those innovations is what Ferrari calls the "Actiflow" system, which increases downforce or cuts drag depending on the car's cornering attitude, "courtesy of the use of a porous material in the diffuser and two fans in the trunk which channel the air flow from under the car out through the two grilles next to the taillights." Ferrari says the 599XX produces 617 lb. of downforce at 124 mph and almost 1400 lb. of downforce at 186 mph. The F1-derived "doughnuts" partly covering the wheels and brake discs improve both aerodynamics and brake cooling.