A vehicle comprising: a frame; a passenger presence sensor mounted to the frame; a seat assembly being removably connected to the frame and comprising: a driver seat disposed on the frame; a passenger seat disposed on the frame rearward of the driver seat, at least the passenger seat being selectively disposed on the frame and being removable therefrom; and a rigid passenger presence responsive member (PPRM) being retained in the passenger seat and movable with respect to the frame between at least a first position and a second position responsive to a weight of a passenger seated on the passenger seat when the passenger seat is disposed on the frame, the PPRM being coupled to the passenger presence sensor in at least one of the first and second positions when the passenger seat is disposed on the frame, the passenger presence sensor being thereby configured to detect a presence of the passenger when the passenger seat is disposed on the frame, the PPRM being uncoupled from the passenger presence sensor when the passenger seat is removed from the frame, the PPRM being retained in the passenger seat when the passenger seat is disposed on the frame and when the passenger seat is removed from the frame, the passenger presence sensor being mounted to the frame when the passenger seat is disposed on the frame and when the passenger seat is removed from the frame. a frame; a passenger presence sensor mounted to the frame; a seat assembly being removably connected to the frame and comprising: a driver seat disposed on the frame; a passenger seat disposed on the frame rearward of the driver seat, at least the passenger seat being selectively disposed on the frame and being removable therefrom; and a rigid passenger presence responsive member (PPRM) being retained in the passenger seat and movable with respect to the frame between at least a first position and a second position responsive to a weight of a passenger seated on the passenger seat when the passenger seat is disposed on the frame, the PPRM being coupled to the passenger presence sensor in at least one of the first and second positions when the passenger seat is disposed on the frame, the passenger presence sensor being thereby configured to detect a presence of the passenger when the passenger seat is disposed on the frame, the PPRM being uncoupled from the passenger presence sensor when the passenger seat is removed from the frame, the PPRM being retained in the passenger seat when the passenger seat is disposed on the frame and when the passenger seat is removed from the frame, the passenger presence sensor being mounted to the frame when the passenger seat is disposed on the frame and when the passenger seat is removed from the frame. a driver seat disposed on the frame; a passenger seat disposed on the frame rearward of the driver seat, at least the passenger seat being selectively disposed on the frame and being removable therefrom; and a rigid passenger presence responsive member (PPRM) being retained in the passenger seat and movable with respect to the frame between at least a first position and a second position responsive to a weight of a passenger seated on the passenger seat when the passenger seat is disposed on the frame, the PPRM being coupled to the passenger presence sensor in at least one of the first and second positions when the passenger seat is disposed on the frame, the passenger presence sensor being thereby configured to detect a presence of the passenger when the passenger seat is disposed on the frame, the PPRM being uncoupled from the passenger presence sensor when the passenger seat is removed from the frame, the PPRM being retained in the passenger seat when the passenger seat is disposed on the frame and when the passenger seat is removed from the frame, the passenger presence sensor being mounted to the frame when the passenger seat is disposed on the frame and when the passenger seat is removed from the frame.