On separate occasions, both the driver and passenger side visors spontaneously detached and fell into the line of sight while driving. In the case of the driver side visor, I was traveling on the interstate at approximately 75 mph when the visor failed and fell into my light of sight, impairing visibility. The failure was also sudden and distracting. The passenger side visor failed in the same way about 9 months later. It appears that a part securing the visor to the roof of the vehicle is defective and can fail without warning.