Shiny silver cigar craft with a clear blue sky. Had 2 very small wings like a government drone but hovered and disappeared.

Driving south into Franklin on Franklin Rd, look to my left and see what looked to be a silver, cigar shaped aircraft that was extremely shiny and appeared to have 2 small wings with no tailwing. It must have been as large as a passenger aircraft. Seen directly over the Harpeth river and it must have been at least 25-30,000 feet up. It was briefly moving at about 100-200mph but then stopped, and began hovering in the sky. It left no trail. That is when I stopped my car on the side of the road to get a better view of it, rolled down my window and as I pulled out my phone to take a video, the craft slowly faded out of existence. This was a 5 second process where i could literally see the craft fade into the sky like it was slowly putting on an invisibility cloak. During this process, the craft was hovering and was not turning in any direction.