Sometimes you just have to gape in awe at the, ummmmm, remarkable things people do to their cars.
Or as our friend (and occasional fellow car writer) Sean Bugg puts it: What did that BMW ever do to you?
Yep, it's a biplane wing on the truncated trunk of an otherwise perfectly innocent BMW Z4. No doubt it adds hundreds of pounds of crucial downforce on the rear wheels at freeway speeds.
God, we love America: land of the free, and home of the truly, utterly tasteless. Rock on, dude.
BMW Z4 with biplane rear wing, from BuggBlog