Abstract: A plastic window assembly for use in a motor vehicle has a plastic panel and a motor. The motor is coupled to a gear and is operable to drive the gear to move the plastic panel in a first panel direction and in a second panel direction. In one variation, the plastic panel has portions forming at least one gear track to define a gear path. In another variation, the window assembly has a frame, and the frame has portions defining a track. The track has a central section and a terminal section, the central and terminal sections intersecting and being non-collinear. In another variation, the plastic window assembly has a flexible strip. A first end of the flexible strip is connected to the gear and a second end of the flexible strip is connected to the plastic panel.