An automobile includes a body side panel including: a first pillar disposed rearward of a door of the automobile; a second pillar disposed rearward of the first pillar; an interior panel connecting the first pillar and the second pillar; a rear quarter panel attached to the exterior of the body side panel and forming a cavity between the rear quarter panel and the interior panel; and a retractable window disposed between the first pillar and the second pillar; wherein the retractable window is configured to move between a first position and a second position, the first position being defined by a roof of the automobile, the first pillar, and the second pillar, and the second position being inside the cavity.