The term "mirror caps" refers to a type of decorative trim that is often used on vehicles, particularly cars and trucks. These mirror-like pieces are typically made from chrome or other reflective materials and are designed to give the appearance of a continuous strip of reflective material along the edges of a vehicle's body panels. They can be found in various places such as around windows, doors, and along the bottom edge of the car's body. The purpose of mirror caps is both functional and decorative - they provide a visual enhancement to the vehicle while also adding a touch of elegance and sophistication.