Sunroof

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 moveable 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.

A sliding sunroof on a Porsche 911 Carrera (Type 991)
A moonroof on an Acura Integra
Example of the Sedanca de Ville style body from 1934 with a covered passenger compartment and open chauffeur cabin
1934 Bentley 3.5 Litre Sports Saloon showing sunroof
A 1934 Bentley with opening above the driver's compartment resembling the modern Sunroof