[bobcowan]

If you have a windshield, the area in front of the windshield is a high pressure zone. Any vents or holes are purely asthetic.

I have driven my car at triple digit speeds with the hood unlatched. The hood did not lift. That tells me there is no pressure under there. No point in putting any functional vents there.

OTOH, since that is a high pressure area, it would be a good spot for an air intake. Like a '65 Mustang.