Trees? Reflections maybe?
I can't find any pictures showing it completely open. Here's the closest I found:
A/C equipment?
I've seen these around, for about 90% of the length looks like they got it right, then the darned wing looking part ruins it. Even it it's a wing/spoiler. Nothing would be better.
Mauck has been around with some swoopy looking stuff before:
I think there were some RVs built from them too.