Neat, another solar cooker! If your in a place where the sun shines a lot – like the southwest United States – one of these could save you some bucks on gas on y our next BBQ. Good for camping too, you could boil water without worring about starting a forest fire.
The site leads you to one in Italian but you can find there in the US. The Solar Cooking Archive is a good place to start, lots of information there. If your looking for one that is a bit like the Italian one, the ClearDome SolaReflex Parabolic Solar Cooker should do the trick for you. And if your wondering why the heck you would use a big old silver salad bowl to cook with, you should read this.