MOguy, innovative solution and I always like to see homebuilt stuff.
Well, too bad something like doesn't exist. I could see someone traveling with a family that wants to keep the back seats in use. And a full rack extending over the hood could give you some more storage.
Plus, I recently test drove a Class C motor home with the over cab bed extending out over the hood. It was midday. It was nice how that overhang shaded the windshield. I could drive without my sunglasses. On long drives I like to take the glasses off for a while sometimes....