Too bad the tower and the photographer missed this one.
Since those are my pictures, I can comment on that series of shots.
Keep in mind that those shots were made with a long telephoto lens.
They were then enlarged in software (cropped out a small portion of the frame to enlarge the image).
Then I made some gamma adjustments to improve visual contrast (adjusted how much change in image contrast is necessary to go from full black to pure white).
Those images are about the view you would have through a pair of binoculars, not the naked eye.
The only reason the car is easy to see is you are viewing it from the shadow side of the car, sun coming from the right beyond the car at 90 degrees from the point of view making many of the shots have a dark shadow side to the car. In the pictures I shot of the car while you were getting out of it after the spin, I had a tough time finding a setting where I could differentiate the car from the salt behind it. In part of the image there is effectively no difference in color between the car and the salt, and I could not digitally select the car, and do much with the contrast because the dynamic range of the photo was so extreme, (deep shadow and black tires against white salt and a white car).
In flat hazy light the view where there is no shadow side of the car visible is very hard to see.
Attached are two images that show about what the view looked like to the naked eye from my vantage point, if the car was in a position where there was little shadow side visible. My view was almost a mile away.
I removed the contrast enhancements to flatten the image contrast.
The second image is about the view the tower would have had as they were farther away.
Remember also that a crew trying to find a car are at a relatively low position and because of the curvature of the earth can only see about 1.5 miles. If the car is much farther away then that they will only be able to see the very top part of the roof. If it is white and the black tires are below the horizon they are looking for white on white. Throw in a bit of sun glare, dirt on your windshield dust on your sun glasses or salt dust from a spin and the outcome is obvious.
Larry