A sunroof is a movable panel that opens to uncover a window in an automobile roof, allowing light and fresh air to enter the passenger compartment. Sunroofs can be manually operated or motor driven, and are available in many shapes, sizes and styles. While the term "sunroof" is now used generically to describe any glass panel in the roof, the term "moonroof" was historically used to describe stationary glass panes rigidly mounted in the roof panel over the passenger compartment. A moonroof has a glass panel that is transparent and usually tinted. Previous terms include sunshine roof, sliding head, and sliding roof.

The Honda CR-X, originally launched as the Honda Ballade Sports CR-X in Japan, is a front-wheel-drive sport compact car manufactured by Honda from 1983 until 1991 with nearly 400,000 produced during this period. The first-generation CRX was marketed in some regions outside Japan as the Honda Civic CRX. Although there are many supposed definitions for the initialism CR-X, the most widely accepted is "Civic Renaissance Experimental".