Sun Protection Car Cover For a sedan, the device can be installed as a spoiler, which upgrades the car and saves fuel while driving. For a hatchback, the unit is secured in the form of an adorned briefcase. Inside the unit are the cover and an elastic cord which is threaded through specific openings that are used to adjust the cover to the vehicle It takes just 30-40 seconds to cover the car without any help, and taking it off is even faster. The cover is made up of a unique, metallic fabric that reflects 95% of the sun's rays! This keeps the interior cooler-with temperatures twice as low as an uncovered car. The cover also protects the exterior finish from sun damage as well as nicks and scratches, and it keeps the steering wheel and dashboard from overheating.