a plastic composite construction and process for its preparation are disclosed in which the composite comprises a plastic core or center of extended surface area . the composite includes a metallic layer on at least one face of the core and an elastomeric layer , such as of a butyl rubber , adhered to an opposite face of the core . the addition of an elastomeric layer converts the composite to an energy - absorbing construction of substantially improved impact resistance which avoids the normal cracking or spalling of the metallic layer upon impact . the present plastic composite may have an impact resistance of at least seven foot pounds at minus 30 ° f . the plastic composite can be used as an exterior mirror housing and the like for vehicles .