Car windows are transparent panels made of glass or plastic that allow passengers to see outside while providing protection from the elements. They are designed to be durable and can be opened or closed, depending on the vehicle's design. Most cars have side windows, a front windshield, and a rear window, each serving specific functions for visibility and safety. The front windshield is crucial for the driver's view and is often treated with special coatings to reduce glare and improve visibility in various weather conditions. Side windows can be manually or electronically operated, while rear windows may include features like defrosters to enhance visibility during cold weather.