Ok, mclaren was running new aerodynamics in jerez. Take a look at the hot air outlets. I'm not sure whether they're new or not, since the photographers managed not to take a single picture of the tops of the sidepods of the new mac during it's first test earlier this month. First of all there is a big gaping hole. It's gigantic. The pipe thingy is a ramp to the winglet. Very interesting, leading the air under the winglet, on to the flip-up. Then there are those holes around exhaust gas outlets. But most interesting of all is that small hole under the tiny west logo... what is it's purpose? best seen in the last picture
Man, they sure have put some holes in their car, that's for sure.