“…Schön and Wiggins (1992) emphases that there can be emergent properties in the design medium: each new gesture creates new problems to describe and to solve. All these considerations create a common ground among designers, of which the holistic activity is connected to a wide action of information's searching, hand in hand with artistic competence (Tovey, 1992(Tovey, , 1997. During the making of the final sketches, mental representation consists of a succession of accurate and detailed images (shape, constituents, aspect, impressions linked to the environment, as well as a coloured background or a detailed environment of the vehicle), which offer more acuteness and realism.…”