When your trunk is 48" (1219mm) long it's kind of hard to reach things inside. It's not a matter of what looks best- it's a matter of making the cargo as accessible as possible. Maybe it'll have some sort of canopy that unfolds from the top seam when you open it.
George, you reminded me. I was going to enter the contest but never got my crap together in time. Here's a very sketchy rendition of
my design.