The use of CAD is product. Its use is widespread in the car industry, through most of the process of designing a new most uneven and various at the concept stage when stylists make their contribution. The appearance design of a new vehicle is crucial if it is to be a success in the marketplace. CAD is contributing to reducing lead times and hence to a greater responsiveness to the market. If stylists are to make their contribution effectively they need to be able to maintain the ease and productivity of conventional concept sketching, whilst adding the 3D capability of CAD. Sketch mapping provides the tools and techniques for doing this, and recent refinements to the interface have enhanced its utility.