I'm guessing this is due to beta, but something going on in this photo with the window. Looking at the other side (in other photos) it appears taped. Surely just a beta thing.
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As someone going through a winter with oft-frozen windows on the Model S, to me that image looks like a frozen frameless window not bowing down when opening/closing the door. It stays exactly like that above the chrome trim when frozen in the upmost position on the Model S.
Obviously it is not frozen in that image, but it could be intentionally tested to see how the car performs in that scenario, intentionally left hanging out like that to camo the shape of the car, or simply a bug/broken. To me it looks like the window is up and pushed slightly ajar by the roofline chrome trim. Of course images in #681 suggest that could be just stuff taped on the sides of the window and, thus, merely an optical illusion - in fact, despite what my eyes tell me, I'm leaning on the latter simply because of symmetry and #681 images showing how that illusion can happen from more close proximity. The "dock mule" Model X episode earlier in the thread certainly showed us how much optical illusions can mess with our heads when the images aren't of high-enough resolution.
For all those who've taken part in the investigative work in this thread, major thanks. For those who think it makes us somehow unique or strange, let me assure you, it is the same on every enthusiast forum/interest group on the internet or off the internet, no matter the category. Part of the wait is the fun of trying to find out what you can, some of it can go way out there or way off, but as even Elon Musk admitted in the lead-up to the "D", much of the time this process does get it right to the extent it can. Of course this process is also helpful in trying to make as educated decisions as possible with obviously limited and probably faulty data, say, for someone mulling whether or not to wait for Model X or go for some other product. So, a great thread. Thank you.