At about 4:00pm May 29, the driver of a white Chevrolet transport van was seen speeding in my rear view mirror. He was speeding and swerving between lanes during a fairly busy time. When he drove by my passenger side, he sped up and quickly cut me off (going at least 80 mph). Had I not slowed down quickly, I would have been crashed into. The driver continued speeding along, swerving between lanes, tailgating, applying brakes only when necessary. Very dangerous driver!