That last picture is interesting, as it indicates that there is some kind of heat exchanger along the left side as timbo says.
As suspected it could be integrated into the side of the fuel tank.
If not there, then it may be the additional radiator on the right hand side of the car.
hmm...
So if it's water to air.
then it's integrated water to air in the side of the tank going to a water radiator on the right side of the car.
If it's air to air.
It's that same radiator/intercooler as the sole heat exchanger.
But that McLaren pic definitely would support the integrated intercooler design.