A system for determining surface topography of a three-dimensional structure is provided. The method includes determining whether the engine is running, determining whether a gear ratio of a power transfer unit is selected, starting a timer, and implementing a stall mitigation strategy. The foam body is preferably a flat sheet having a length, a flat upper surface, a lower skin-contacting surface and at least four holes in the flat upper surface thereof. The ring portion and tines are malleable in the sense that once deformed from a first shape into a second shape, they will not relax back into the first shape from the second. The airbag cushion includes a front panel, a rear panel provided rearward of the front panel, wherein the front panel and the rear panel are joined together and thus form the predetermined space when gas is introduced.