Day light sighting of burniched aluminum sauser

I was on my way home from work on a two lane country road when I saw what appeared to be an air plane heading straight at my car.  There was a telephone pole between me and the air craft.  I stopped my car confused as to why it wasn't moving and watched it for quite some time.  There was nothing in my life experience that I could draw on to explain what was happening to me.  I sat there tranfixed just looking at it for what appeared to be a long time trying to make some sence out of what I was seeing.  It was approx. 1 1/2 car lengths across and was made of a material that looked like burnished aluminum.  There was a "seam" in the center as you would see if you put two plates together in a () direction but on it's side.  Strangley enough there was no sound coming from the saucer nor from anything else.  No sound from birds or any other noises one hears at this time of day n a country road.  I was about 15 to 20 feet from this object and it never moved until I lost my nerve and drove away as fast as I could.  I had two other sightings that summer.   All three were up close and personal.  The third time my mother was with me.
Date is approximate.  PD