Stowable passenger seat with roll bar

A vehicle having a stowable passenger seat, comprising:

• a combination seat back frame and roll bar movable between a retracted position and an extended position, the combination seat back frame and roll bar selectively operable for carrying at least one additional passenger when in the extended position;
• an exterior surface portion configured to provide a body contour surface of the vehicle when the combination seat back frame and roll bar is moved into the retracted position;
• and
• a combination of a track mechanism and a plurality of rotatable elongate linkages guiding movement of the combination seat back frame and roll bar between the retracted and extended positions.

A rumble seat for increasing passenger capacity of a vehicle by at least one occupant, the rumble seat comprising:

• a combination seat back frame and roll bar movable between a retracted position and an extended position, the combination seat back frame and roll bar selectively operable for carrying at least one additional passenger when in the extended position, while providing a body contour surface for the vehicle when in the retracted position;
• a combination of a track mechanism and a plurality of rotatable elongate linkages guiding movement of the combination seat back frame and roll bar between the retracted and extended positions, wherein the track mechanism includes a guide track having an L-shaped configuration with an upper horizontally extending segment and a lower vertically extending segment, and the plurality of rotatable elongate linkages includes at least one linkage associated with each side of the combination seat back frame and roll bar, the at least one linkage connected to a lower portion of the combination seat back frame and roll bar at one end and adapted to be rotatably supported from a vehicle frame member at an opposite end;
• and
• a releasible latch mechanism associated with a vehicle frame member located adjacent to a floor of the vehicle, wherein distal ends of the combination seat back frame and roll bar connectibly engage with the releasible latch mechanism when the combination seat back frame and roll bar are in the extended position.