Between 0745 and 0800 hrs going southbound on I-55 through the Missouri Bootheel the skies were partly cloudy (25% clouds) that an unidentified object was observed going West by Northwest just north of the Steele, MO exit. The object appeared to be 50-100 ft in diameter and flying at approximately 150-200 mph. The object was a silvery disk. The re was an intense amount of static several minutes before I observed the object. I am nascar fanatic and attend various stock car racing events in the MO, AR, KY and TN area. I was reminded of telling you this by my interim commander who passed along your websites e-mail address. I am a law abiding and peaceful, patriotic person. This object was not of earthly origin.((NUFORC Note: Witness elects to remain totally anonymous; provides no contact information. PD))