Abstract: There is described a manufacturing method of motor vehicles which achieves the object of reducing the costs deriving from the manufacturing of vehicles belonging to different segments and the costs deriving from the traditional assembly of vehicles which starts from the external shell onto which the elements forming the interiors and the mechanical members are assembled, by suggesting the arrangement of a single self-supporting structural element formed by composite material, already provided with many interior elements, to which a new other interior elements, bodywork elements and mechanical elements can be connected in any assembly order.

Abstract: A method of manufacturing vehicles, comprising at least the steps of: providing a first shaped panel made of plastic material; providing a second shaped panel; coupling the first shaped panel to the second shaped panel so as to define a structural element of the vehicle, in which a hollow space is confined between the first shaped panel and the second shaped panel; before or during coupling, arranging conductive tracks in the hollow space, which conductive tracks define at least part of an electric equipment of the vehicle; filling the hollow space with polyurethane.

Abstract: A method of manufacturing vehicles, comprising at least the steps of: providing a first shaped panel made of plastic material; providing a second shaped panel; coupling the first shaped panel to the second shaped panel so as to define a structural element of the vehicle, in which a hollow space is confined between the first shaped panel and the second shaped panel; before or during coupling, arranging conductive tracks in the hollow space, which conductive tracks define at least part of an electric equipment of the vehicle; filling the hollow space with polyurethane.

Abstract: There is described a manufacturing method of motor vehicles which achieves the object of reducing the costs deriving from the manufacturing of vehicles belonging to different segments and the costs deriving from the traditional assembly of vehicles which starts from the external shell onto which the elements forming the interiors and the mechanical members are assembled, by suggesting the arrangement of a single self-supporting structural element formed by composite material, already provided with many interior elements, to which a new other interior elements, bodywork elements and mechanical elements can be connected in any assembly order.

Abstract: A door for vehicles, mainly comprising a box structure with a downwards open cavity. An assembly formed by the glass and the relevant guides and lifting mechanisms is assembled separately and is then inserted from the bottom into the cavity of the box structure of the door, and fixed therein. The box structure of the door, which may advantageously be made of plastics, is further provided with a recess into which a lock assembly, separately assembled as well, can be inserted. The lock actuating structure can be housed within a recess particularly provided to this end in a protrusion forming an arm rest. With these arrangements, the expensive operations which have to be performed on the door installed on the vehicle are minimized, thus reducing the assembly costs and time.