NO, I'm not talking about a wing. As crazy as it may sound or look I'm talking about something like a starofoam cap that would fit on top of the cage. high density about 6inch thick. if a car got upside down it would absorb the energy and also protect the driver on the first impact.It may look goofy but when cages first came out people thought they were stupid looking and only for wussies.It maybe something that only select tracks use ,high speed concrete wall tracks. Just like some tracks make you run mufflers some tracks would make you run a cage cap.