We saw a long white tic tax type cylinder with rounded edges hovering above the tree line.

My kids and I were carpooling home in 2 cars from St.Louis, MO to Springfield, MO headed west on I-44 when we saw a long white tic tac type cylinder with rounded edges hovering above the tree line. I instantly turned my phone towards it that was on a mount and I thought started recording. I first spotted an enormous long cylinder shape right above the tree line probably less than a few miles away. I noticed skydivers parachuting near by and thought this might be the plane that dropped them but then noticed the object was too far away from the skydivers to have dropped them and the more I looked I noticed the cylinder object was about the length of several large airplanes, and obviously not a small plane to drop skydivers. I would say the object was half a mile to a mile long. It was enormous in length. Solid white, with rounded ends, like a giant half mile long propane tank hovering in the sky. I was blown away. I went over a hill and the object disappeared behind the tree line, when I got over the hill the object was gone. The skydivers were still there. My teenage son who was driving behind me, called me on my cell phone right after it disappeared and said Dad did you see that! I was so happy that he had seen it too. I said yes and I got it on video but then I looked down and I noticed in my excitement I had forgot to hit record on the phone. I was so sad. I then asked my son what he had seen? He said that he was driving and noticed a white circle light in the sky and asked his sister who was also in the car with him if she saw it. At first she did not, but then after scanning the sky she saw it too. They both said then the object started moving left in the sky as a circle of light and then instantly became a giant line in the sky they said. They also noticed the parachuters but also noticed this object was miles away from the parachuters. I felt like the object was almost watching the skydivers, and if the skydivers were wearing cameras or if anyone was filming them coming down from the ground below they had to have caught this giant object on camera somewhere. Anyways my son said he saw it turn from a bright circle to a long line and then he said he looked again as he was driving and it was gone but my daughter said she watched the line move left in the sky and the rapidly take off like it had propulsion and disappear. I called the skydiving place to ask if they had any witnesses but they said they would get back to me and that was a few days ago and I haven’t heard back. 3 of us saw this but I think the reason I could make out it’s cylinder shape and rounded edges was because I was a few car lengths ahead of my kids and had the advantage of being closer to make out more detail. I can’t think of anything more except to say I know that highway was pretty busy and I am quite sure that other motorists had to have seen it as well. If I held my finger up to the window and tree line a normal plane would take up about a quarter inch of my finger, this object was easily a full inch of my finger long. Extremely long and that was from miles away, I can’t imagine how big it really was.