Business Idea !! Hot pack for Pizza

I am not sure if this exists today. When you buy a pizza to take away and eat or order one home it is not fresh even if your home is 10 mts away. I think this opens up a business opportunity for an entrepreneur to come up with a hot pack for such food items that doesn't add too much cost to the product !! I am thinking for a thin paper wrapper with heat resistant capability to keep it warm and fresh !! Same problem exists when you start eating the pieces. Freshness of the last piece that you eat is not the same as the first one you ate.