An impact protection structure, including a sheet formed of a plurality of polygonal cells adjacent one another, the plurality of polygonal cells including a plurality of hexagonal cells, the plurality of polygonal cells including at least one pentagonal cell and at least one heptagonal cell to accommodate a generally domed shape in the sheet with a reduction in a distortion of a regular shape of the plurality of hexagonal cells.

The sway bar linkage connects a sway bar with a control arm of a vehicle suspension system. The linkage includes a fastener and a plurality of bushings disposed between the fastener and the sway bar and between the fastener and the control arm. At least one of the bushings is constructed as a single piece of material, presents an outer surface, presents an inner bore which extends along an axis for receiving the fastener, and presents a plurality of pockets. The pockets are spaced radially between the inner bore and the outer surface for allowing the bushing to more easily deflect and absorb energy while transferring forces between the sway bar, fastener and control arm.