Four bright white lights in a row, descended sharply and diminished to a flashlight size and winked out and hit ground.

On August 21, 2004 at approximately 10:10 P.M. CST I noticed a very odd phenomenon  over Interstate 90/94 southbound between Poynette, WI and DeForest, WI.  My wife and I were driving home from central Wisconsin from a friends cottage.  No alcohol or drugs were consumed at the outing. It was a very clear night and the stars were very visible.
 My wife and I both noticed a bright white light in the sky.  She asked what it was and I responded jokingly, a UFO.  It was extremely bright and was composed of four lights in a row flying perpendicular to our line of travel.  At first we thought they must be landing lights on an airliner.  However the four lights in a row were not right.  Usually there is some separation between the lights. There was none.  Between us and the lights there was a microwave tower with a red light on it,  the lights appeared miles beyond the tower.  We passed the tower in about a quarter to half mile.  Then the lights started to descend.  I thought it might be a plane landing at the Dane county airport a few miles to the south.  But it wasn't turning toward the airport as it should have.  It proceeded straight across the highway about what initially looked to be about a quarter mile ahead of us.  It then came down very steeply and I though it was going to crash in the woods next to the highway.  Instead the lights dropped in intensity until it looked about the size of a flashlight.  It then winked out and appeared to land on the shoulder of the road directly to our right.  When it winked out it was the size of a computer keyboard and appeared to fly into the woods next to the road.  It was not a bird.  We could not stop as it was a crowded interstate and had a steep ditch next to the road.  We proceeded home to Madison and I filed this report.  It was definitely an Unconventional Flying Object.