Long Description of Sighting Report

I was driving on the H1 town bound on the freeway @ 9:30 in the morning with my family and i spotted a white object in the sky while I was passing the stadium. The object appeared from nowhere and moved upward in a straight line until I couldn't see it anymore. The object was a perfect elongated rectangle with no other visible markings. It moved at a very fast pace flying higher towards the clouds then went totally out of sight.