1. A method of a vehicle design system for analyzing constraints on parameters of a vehicle model, the vehicle design system including a user interface and a display device to display a catalog of exemplars from which a user may select exemplar input and at least one engineering criteria having a plurality of criteria values from which a user may select criteria values, the method comprising: providing a morphable vehicle model generated from exemplar input; selecting a first criteria from the plurality of criteria; and evaluating the morphable model with respect to the first criteria to generate numerical output.