Building a Car with Cardboard

How about those little devil horn things, heh?
I am back on the windshield thing, making parts out of cardboard.
Most of the fabricated bits on the car start out as little bits of cut up beer cases. I usually make two or three cardboard versions, to see what sorta looks right. Then there are usually two or three real metal versions to get close to what I see in my head.
The windshield bit here has had more than two or three cardboard versions. This here version is by far the most simple, and I think I like that about it. Obviously, there is more to it than those cardbaord bits but the part I see in my head doesn't show up in pictures.