Hardtop vehicle roof movable between closed and open position

A hardtop vehicle roof movable between closed and open positions and comprising a front roof element and a rear roof element including side support members and a rear window panel wherein, for conversion to a cabriolet configuration, both roof elements are movable into a storage compartment and said rear window panel of said rear roof element is movable independently of the side support members, said front roof element being movable independently of the rear roof element to permit moving of only the front roof element into the storage compartment so as to provide for a Targa configuration of said vehicle, said rear window panel being movable, independently of said rear roof element, into said storage compartment while the front roof element and the side support members remain in a closed position so as to provide for a Landau configuration of said vehicle (vehicle front roof and side support members in place, rear roof segment removed), said rear roof element being pivotable upwardly about an axis extending transverse to the vehicle longitudinal axis for providing space for the opening and transfer movement of the front roof element into the storage compartment during conversion of the vehicle roof from the closed position to the Targa configuration, said front roof element being adapted to be pivoted during transfer from the closed position to the storage position by 180° so as to be deposited in the storage compartment at the bottom with the inside of the front roof element facing upwardly and said rear window panel being disposed in a cabriolet configuration of said vehicle in said storage compartment above said front element.