It is not abnormal to see aircraircraft that can sit still in the air for a good stretch of time. I've seen comercial carriers seem suspended in the air as they wait for their turn to land. Maybe only the newer ones do this. My dad has seen these plenty of times as well, and I thought such a thing would seem normal to folks by now. As for being cigar shaped, no ideas there.
Do clouds smoke?
When I think about it, I may have seen this thing too earlier in the month, but it was early in the morning and on my way to Houston. It was indeed odd as the shape was different and it seemed to be sitting still, but because I was driving and on a winding road I brushed it off as any ol' plain. I'm a Texan by the way.