This picture looks fabricated (as in not a real picture of a smoke trail or CFD) and thus irrelevant. I think i've seen that picture before without the blue lines around the car.
As others have said, it's not just Cd that matters but Cd and frontal area which dictates the relevant drag # for the car. Most tests don't show the CdTOTAL (total drag) or "airdragindex" (cd x A)
If you look at this test (not all data is always accurate, especially those put out by a biased manufacturer, but its still interesting):
http://www.suzukaracing.com/GTR page/racetoroadgtr.pdf
Frontal area:
NSX-R - 1.78 sq.m (Announced) X 0.32cd = 0.57
Carrera GT - 1.9 sq.m (Calculated) X 0.39cd = 0.74
Porsche GT2 - 1.9 sq. m (Estimated) X 0.32cd = 0.61
360 Modena - 1.906 sq. m (Calculated) X 0.34cd = 0.65
Nissan GTR - 2.09 sq.m (Estimated) = X 0.27cd = 0.56
***Keep in mind all of these frontal areas (except for the NSX-R) are ESTIMATED. I'm not too sure the difference between the frontal area of a GTR and a 360 Modena is less than the difference between an NSX-R and the 360 Modena. I'm also a bit skeptical about the GTR's cd numbers, but a lot has gone into the body of the car but if its accurate, it's quite impressive.
Anyways, the NSX-R nets a decent amount of downforce (especially up front -moreso than a GT2). As with most articles like this, it should be taken with a grain of salt because there's a lot more to the whole picture than what is provided, but it's still interesting.
Billy
