A vehicle control system includes a housed sensor cluster generating a plurality of signals. 5% of a hydrocarbon component; wherein the amount of R227ea and R125 if present, is at least 35% of the hydrofluorocarbon component. The substantially contoured interface surface may include at least one planar surface portion to about a flat cut portion in the surface of the femur. A liability value is assigned to the combination of the first key and the at least one attribute.