Car doors are hinged panels that provide access to the interior of a vehicle. They are typically made of metal or composite materials and are designed to open and close securely. Most car doors have a handle for opening and a lock mechanism for security. There are different types of car doors, including sedan doors, hatchback doors, and SUV doors. Some vehicles feature sliding doors, which are common in minivans, while others may have convertible doors that fold down. The design and functionality of car doors contribute to the overall safety and convenience of the vehicle.