Both Porsche Panamera and Audi A7 have automatically raising spoilers. They too are very heavy, all-wheel drive vehicles with very rounded rear designs. Maybe they need to be very rounded for minimum drag... but at the same time could need to offset that with additional downforce above certain speeds for safety?
Granted, Panamera and A7 are not very high, but on the high vehicle front the obvious CUV/SUV alternative, after all, would be a constant spoiler on the top of the rear window, probably not something Tesla wants to do? Audi has such a lip on the Q7 for example and BMW on the X5 etc. Model X does not have a top spoiler.
The highlighted (in this thread) area in Model X certainly could fit something like this shape-wise - sharply ending rear window with a rounded piece underneath it, in that regard the Model X mule is quite similar to Audi A7 and Panamera.
BMW, when they made a sort-of-CUV of the BMW 3... the BMW 3 GT, they added an automatic spoiler as well to complement that very short rear-end:
It isn't hard to imagine certain speeds requiring additional downforce on the rear when there is so little "lip" there otherwise...
Granted, Panamera and A7 are not very high, but on the high vehicle front the obvious CUV/SUV alternative, after all, would be a constant spoiler on the top of the rear window, probably not something Tesla wants to do? Audi has such a lip on the Q7 for example and BMW on the X5 etc. Model X does not have a top spoiler.
The highlighted (in this thread) area in Model X certainly could fit something like this shape-wise - sharply ending rear window with a rounded piece underneath it, in that regard the Model X mule is quite similar to Audi A7 and Panamera.
BMW, when they made a sort-of-CUV of the BMW 3... the BMW 3 GT, they added an automatic spoiler as well to complement that very short rear-end:
It isn't hard to imagine certain speeds requiring additional downforce on the rear when there is so little "lip" there otherwise...