White Translucent Shape

I was driving home from work (heading south) on Rte. 45 in Ellsworth, OH, (I was a little north of the 45/224 intersection), and I happen to look out my car window (east), noticing the low cumulus clouds and the streaky higher cirrus clouds and the pale blue of the sky separating them and how beautiful it looked.  I then noticed a white sort of translucent shape just below the cirrus clouds.  If I had to put a shape to it, it would be diamond but it was not a true diamond shape it was more in the shape of a kite.  
There were no contrails, there were no marker lights and no dark shape of an airliner and this thing was soaring through the sky at a high rate of speed.  It was very hard to take my eyes off this thing and pay attention to the road traffic because I never seen anything like this before.  Eventually the "thing" kept heading east and because of my angle on the road and the low cumulus clouds I lost sight.  I then looked west hoping  to see f! ighter jets or something to confirm what I saw and confirm that I wasn't seeing things but no arrived, or at least none that I saw.  Later that night I told my wife what happened and what I saw but she did not believe me but this happened and I don't know what it was I saw.