We witnessed a large craft hovering in the distance.. pitched forward and stationary until it vanished

My son and I were traveling down Union Cross Rd in Kernersville (heading in the direction of the HWY 74 BYPASS); If you are looking at a map, when he first mentioned to me that he saw something, we were at the new intersection with Interstate I40... he was seeing it for approx 30 seconds before I could focus on it...it was incredibly far off in the distance. That being said, today was an exceptionally clear day so it wasn't hard to see this thing in detail.
At first, it looked like a comet.. same shape with a tail/trail that was in close proximity to the body (noticeably different than the contrails of any aircraft).. I even suggested in the first few seconds that possibly there was a close proximity launch??? Which I could immediately rule out considering where we are in the state of NC and the direction that it was facing. But once we came past Glenn High School, where we had about a mile to really focus on it, there was ZERO movement from the craft. It was pitched forward and down.. and (this is an absolutely rough estimate) it was by our best guess, over the region of Cabarrus County and possibly close to the Charlotte area. This craft was incredibly large... with amateur eyes, I can only guess that it was at about 10,000 ft. and looked to be the size of 3 or 4 blimps..
But as far away as it was, it was a very clearly defined structure and/or craft and it was definitely cylinder in shape.
Completely motionless... pitched forward.
We had a good 90 seconds to view the object until we came to a spot where the trees along the road way began to obstruct our view..
20 seconds later one we had reached about where we had the same visibility.. it was completely gone.
We had a good 2-3 miles of open road to try to find a point in the sky where we could pick it up again, but we were never able to locate it/.
I am 44 years old... I have seen just about every aircraft you can name off in real life..
I have never seen something of this size.. at that distance.. in broad daylight.,