This is the Sun Oven: a large solar powered oven that lets you cook, dehydrate, boil, and a whole lot more just with sunlight. It has room for large cookware. You can use this to cook a 14lbs turkey. It can also be used to dehydrate fruits and make beef jerky. The Sun Oven has enough capacity for up to 6 people.
This oven has a rugged design, weighing only 23lbs. You can find out more about it here.