Car structure comprising a cab shell made in one piece of a light material

A vehicle cockpit (1) comprises a roof (2), a footplate (3), at least a seat (4), a front face (5), a rear wall (6), a seat back (7) and two apertured side walls for receiving the doors not shown. The cockpit (1) has furthermore, apertures (8) and (9) respectively for application of the a windscreen and for lighting devices not shown. The cockpit (1) is made of a single part of polymeric thermoplastic material, having thus a high uniformity without zone of structural weakness. A support structure (10) associated to the cockpit (1) provides the necessary mechanical resistance to the vehicle and has a reticular configuration consisting in a plurality of shaped elements (11) that extend along longitudinal planes, to which transversal stiffening elements (12, 14, 16, 19) are connected. The frame (20), to which the support structure (10) is fastened, comprises a rear portion (21) and a front portion (22), which is bent downwards with respect to the rear portion (21) for receiving the support structure (10).