Abstract: A self-deploying cover for the cab of a vehicle, includes a roof, windshield, rear window and side windows. The cover comprises a fabric sheet having substantially the general dimensions of the cab for enclosing the cab when the cover is placed on the vehicle. A collapsible, semi-rigid frame or spring rod is provided along the periphery of the sheet for deploying the cover to an expanded state from a stored state. Connectors are provided for attaching the cover to the vehicle, suitably at the wheel wells. In another embodiment, the cover includes a skirt for covering other lower areas of the vehicle. In a third embodiment, the skirt also has a collapsible, semi-rigid frame or a spring for deploying the skirt.