underhood = lower pressure near the windshield = higher pressure
the higher pressure air just moves into the area of lower pressure.
Considering most NASCAR noses are completely blocked off from incoming air and no scoops allowed, drawing air from the cowl is the most convenient spot I would think. But I ain't no engineer lol.
Chevrolet did that with the '63 impala Z-11 cars.
526 cubes of angry wedge, pushbutton shifted, 9 passenger killer!
