i'm not trying to start a new argument or anything, but....
you are also half right. at 60 mph (way below what any of us would normally do on the highway) the natural flow of air is about 5,280cfm, at 70 mph it goes up to 6,160 cfm and at 80 it goes up to 7,040 cfm. still far more than the average flexalite setup or even a (gasp) clutch fan.