Observered unmistakeable very bright metallic saucer/disc hovering and moving slightlyUFO Sighting I was traveling east on Highway 40 coming into downtown Hayden, Colorado to pick up a pizza at Wolf Mountain, traveling at 20 - 30 miles per hour. The sky was dark blue with some sparse cirrus type clouds.Looking into the sky in front of me I had observed what appeared to be an unmistakable disc, a very bright shinny metallic silver, a silver unlike any I had seen before.I had thought to myself, maybe it is a very shinny old plane moving forward, however it was moving slightly to my right as if semi-hovering. I could not take my eye’s off of it as it, again ever so slowly shifted to the right . I had also noticed a jet much farther distant and very high with it’s vapor trails.I thought to myself this is definitely a disc and was watching to see if it would make any sharp movement’s, when a tree branch and than a number of buildings obstructed my view for about 5 to 10 seconds.I observed the craft itself for about 10 to 15 seconds.When that area of the sky came back into view there was a wide funnel/chimney cirrus type cloud extending vertical and angular to the left, in it’s place. The disc was gone.I stopped at the pizza shop, got out the car and went out across the street to get a wider view. If it was a plane it would still be in view somewhere, I thought. Nothing in sight except for this broad funnel/chimney type cirrus cloud.I looked at my pocket watch and it was 12:30 pm Mountain Standard Time.The size of the disc relative to the sun was very near one quarter to one fifth of the Sun. Relative to a star it was perhaps 20 times larger or more.((name deleted))5:44 Mountain Standard Time I AM going to sketch a drawing of this scene.