Witness Account

Time: approx 2:25 pm, Location: SE of Bemidji on MN200 around 2 miles before the the MN 64 turn off.
I saw a round, very shiny, glassy looking object in the sky. It had a white glow around it. It appeared to be approx 25 - 30' in diameter. It was not that high, probably 300 to 400'. I was driving, so I was looking at it, then glancing back to the road, then back to it. As I looked, it seemed to look as if it were becoming even more transparent; perhaps it was a trick of the light,(a camo technique?) I glanced back at the road & back up & it was gone. The sighting timeframe was 60 to 90 seconds.