Me and my wife after eating, walked out of the truck stop. We were walking back to our truck. We walked by 4 other drivers who were talking. About 100ft or so to the north of us, we saw a disk close to the size of 2 football fields raise above the trees. It made no noise and moved real slow; so slow it appeared to almost be hovering. It moved to the east for about 20 minutes, then tilted in an upward trajectory and sped off so fast that it was gone up into space in 4 or 5 seconds; all the while never making a sound or stirring any wind.