On friday, august 14, 2020 at approx. 5:10 pm i was traveling west on 520 towards orlando. the area that i was driving was very bright with high visibility and the skies ahead were growing darker due to a forming storm. when i was about 1.5 miles from the merger of 520 and hwy 50, i noticed a large, white (or lightly colored) rectangular object approx. 30 degrees above the horizon. the object appeared to be moving in a way that made it appear almost stationary which led me to believe that it may have been a blimp. as i came closer, i noticed that it had well-defined 90-degree edges and was slowly moving in a northern direction. i continued to scan the sky on the leading side of the object to find an aircraft possibly towing an advertisement banner. i could see no aircraft in the sky and quickly noticed that there was no discernable writing or images on the object. i estimated the object to be approx. 5 miles ahead of my location and roughly 180â€™ long and 130â€™ high. it continued to move to the north and then appeared to â€œnarrowâ€� as it seemed to be turning on a roll axis. [imagine a sheet of paper being held up vertically and then rolling horizontally and becoming flat] the object continued to roll until it became a thin slit in the sky and eventually vanished from view. the whole sighting lasted nearly 2 minutes. i continued to hwy 50 and eventually made my way to the university of central florida area. i continued to scan the skies, but i never saw the object again.