I was thinking the same thing,, about those cowl ducts ,,,fire could come in that duct...but I guess a big enough fire could melt Lexan and get in thru the windshield too !!
B'Ville,,,, My cockpit may not be 100% sealed,,, but it is more sealed than an original car..
As to Elmo,, That's a hike for me to go to as a Non Member for only one or two runs... If I lived closer I would try it out, and see how much dust or dirt got in the cabin.
Charles