CRASH-CAD is a commercially available computer aided design package that specifically addresses design problems of components and sub-assemblies of automotive bodies subjected to crash loading. The program is fully interactive and leads an engineer in several steps towards an improved crashworthy design. The objective of the present paper is to give a theoretical foundation of this new computer program and demonstrate its various capabilities. CRASH-CAD enjoys unparalleled modelling simplicity. It requires only basic cross-sectional dimensions of a given member and a discretization into Superfolding Elements is done automatically. The current version of CRASH-CAD is applicable to prismatic members subjected to predominantly axial compressive loads.