Technically, the GS 450h is a five-passenger car. Offer up the rear center seat, with its pronounced hump and hard raised armrest, and you'll soon realize that this hybrid realistically totes four occupants max. Outboard passengers get deep bolsters, and like the front, feature firm cushions that are contoured for a snug fit. The back sections are set at a comfortable recline, which is a plus since there are no adjustments. Except for vents on the center console, rear seat controls are absent. Passengers gifted with exceptionally long legs may want for more than the thin layer of padding on the front seatbacks, though others should be more than content with the rear seat's overall dimensions.