I just had an idea..
We have the disks, right? THey look good from the air and all.. So what if we used that same effect on the ground, using the properly shaped disks (guess they wouldn't be disks anymore, huh?) vertically, in two directions..
As seen from above (ignore the .'s)
.......|....|....|
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.......|....|....|
.-------------------
.......|....|....|
....--------------
.......|....|....|
(These are 2d, so don't complain to me about fps

)
But, the disks will hide that, so it looks good from both the air and the ground since the ground vehicles and low planes would get the same effect from the vertical panels that the planes do from the floating disks. I imagine those would make some nice looking trees