Its small, briefcase size and lightweight make it perfect for picnics, camping or the beach. Since food won't burn, the Solar Cooking System can be left unattended. Many foods will cook in an hour or less, without the need to re-aim the unit towards the sun. The cooked food will remain hot for hours.
(Text borrowed from http://www.7gadgets.com/2008/07/26/deluxe-solar-cooking-system/6471)