Interesting ideas!
I think the tower is part of the vehicle, as it appears to be sitting lower at the rear, perhaps as a result of the added weight. I think that the mast just visible in front of the plane's spinner also belongs to the vehicle. Also there must be a significant rear overhang because thee appears to be a mast of some sort on the rear also. A support for it runs from the base of the "funnel" to the left top corner of the photo.
Fyll
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