Abstract: A collapsible protective canopy useful as both a sunshade and frostshield for motor vehicles is made of a sheet of corrugated cardboard, laminated cardboard, vinyl, leather, nylon, plastic, synthetic, or combinations thereof, or any other material in which fold line impressions, indentations or creases can be made to define parallel folds which can be stretched and compressed like the bellows of an accordion, the sheet including a center portion and two side portions provided with belts on opposite ends of the sheet for securing the canopy to a car body. The sheet is alternately foldable to a compact package for convenient handling and storage.