In a testament to the "go fast" past design history of VANS, I see no provision for being able to open a window in flight! If you can't hang an elbow out in the breeze while cruising, what good is it?! Taking a door off isn't the same. And....said elbow/arm can't be resting on just a plexi or lexan edge, there needs to be something comfortable for an armrest. I'm no engineer, but I figured out how to put a flip up window in my RANS, (even though I can fly it with doors open, one or both, it's too much of a good thing, a window is just right) with a T-Craft spar scrap for the arm rest. Much thought was given to the height of the arm rest, followed by making a prototype, than a final production run, of one, was made, and it's frigging perfect, and much appreciated in these 95 degree days lately. I'm surprised none of you SC guys caught this glaring error, hopefully to be corrected in the final version. OTHER THAN THAT, it looks like a pretty cool plane.