A motor car (10) has windows (28, 49) which can have a first H 1 fully closed position and a lower H 2 position in which water tightness is still provided but opening of a frameless window assembly/door assembly can be achieved more quickly from the point in time in which the door handle 44, 46) is operated. The Hi position may be selected as the vehicle accelerates above a given speed and the H 2 position may be selected when the vehicle door is closed, and the window may also have a short-drop H 3 lower re-spool H 4 position or in the case of a rear window a three quarter lowered H 5 position.