Interesting. I've been toying with ideas on venting the engine bay in my car through part of the cowl vent.
Nothing workable yet, and would likely take some real surgery to pull it off.
That sure would be subtle and cool...the problem here is related to the location of that cowl vent...it's there because it's specifically a high pressure area ahead of the windshield which pushes air into the cabin vents.
I don't doubt your ability to make this work but you would definitely need to make some air flow mods....maybe a lip in front of the cowl would do it?
