A car comprising: a passenger compartment; two doors which allow access to the passenger compartment and are provided with respective lateral windows, each of which is vertically movably mounted in a corresponding door; a frame provided with two external fixed vertical posts, which are rigidly connected to the remainder of the frame in a fixed position, project from the belt line of the car, face each other on opposite sides of the car, and build a rear delimitation of the passenger compartment; a rigid sun roof, which is supported by the frame and can be set to an open position or a closed position with respect to the passenger compartment; a baggage compartment, which is arranged in a rear position and contains the rigid sun roof, when the rigid sun roof is arranged in the open position; a mobile cover to close the baggage compartment; and a rear window, which is arranged between the two external vertical posts and is mounted in a sliding manner so as to move between an extracted position, in which the rear window projects from the car body, and a withdrawn position, in which the rear window is housed inside the car body; wherein the rigid sun roof comprises two rigid roof members (10, 11) which, when the rigid sun roof is in the closed position, are substantially horizontal and substantially coplanar to each other so as to be seamlessly positioned one behind the other, and, when the rigid sun roof is in the open position, are packed one on top of the other inside the baggage compartment; and wherein the roof members (10, 11) are fitted to the frame by means of corresponding support organs, which are arranged on opposite sides of the roof members (10, 11); the car is characterised in that it comprises a pair of lateral glasses, which: a) are arranged longitudinally more rearwards with respect to the doors so that underneath each glass there is a fixed part of the body, b) are separate and independent from the lateral windows of the doors and frontally and slidably lay on the corresponding lateral windows, c) project from the belt line of the car and face each other on opposite sides of the car, for forming a lateral delimitation of the passenger compartment, d) transversally lay against the corresponding external vertical posts, and a lateral internal surface of each lateral glass is arranged in contact with an external lateral surface of the corresponding external vertical post so that each lateral glass laterally covers the corresponding external vertical post. a passenger compartment; two doors which allow access to the passenger compartment and are provided with respective lateral windows, each of which is vertically movably mounted in a corresponding door; a frame provided with two external fixed vertical posts, which are rigidly connected to the remainder of the frame in a fixed position, project from the belt line of the car, face each other on opposite sides of the car, and build a rear delimitation of the passenger compartment; a rigid sun roof, which is supported by the frame and can be set to an open position or a closed position with respect to the passenger compartment; a baggage compartment, which is arranged in a rear position and contains the rigid sun roof, when the rigid sun roof is arranged in the open position; a mobile cover to close the baggage compartment; and a rear window, which is arranged between the two external vertical posts and is mounted in a sliding manner so as to move between an extracted position, in which the rear window projects from the car body, and a withdrawn position, in which the rear window is housed inside the car body; wherein the rigid sun roof comprises two rigid roof members (10, 11) which, when the rigid sun roof is in the closed position, are substantially horizontal and substantially coplanar to each other so as to be seamlessly positioned one behind the other, and, when the rigid sun roof is in the open position, are packed one on top of the other inside the baggage compartment; and wherein the roof members (10, 11) are fitted to the frame by means of corresponding support organs, which are arranged on opposite sides of the roof members (10, 11); a) are arranged longitudinally more rearwards with respect to the doors so that underneath each glass there is a fixed part of the body, b) are separate and independent from the lateral windows of the doors and frontally and slidably lay on the corresponding lateral windows, c) project from the belt line of the car and face each other on opposite sides of the car, for forming a lateral delimitation of the passenger compartment, d) transversally lay against the corresponding external vertical posts, and a lateral internal surface of each lateral glass is arranged in contact with an external lateral surface of the corresponding external vertical post so that each lateral glass laterally covers the corresponding external vertical post.