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A vehicle bench seat assembly includes a seat bottom including a first seat portion having a seating surface, a second seat portion having a seating surface, and a third seat portion having a seating surface. The seat assembly further includes a seat back including a first back portion, a second bac

A vehicle bench seat assembly includes a seat bottom including a first seat portion having a seating surface, a second seat portion having a seating surface, and a third seat portion having a seating surface. The seat assembly further includes a seat back including a first back portion, a second back portion, and a third back portion located between the first and second portions. The third seat portion is movable between a first position, wherein the seating surface of the third seat portion is generally flush with the seating surfaces of the first and second seat portions, and a second position, wherein the seating surface of the third seat portion extends in a non-flush position relative to the seating surfaces of the first and second seat portions.

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1. A seat bottom for a bench seat assembly comprising: a first side seat portion having a first seating surface;a first outboard seat bolster having a lateral side that extends adjacent to the first side seat portion;a first inboard seat bolster having a first lateral side that extends adjacent to t

1. A seat bottom for a bench seat assembly comprising: a first side seat portion having a first seating surface;a first outboard seat bolster having a lateral side that extends adjacent to the first side seat portion;a first inboard seat bolster having a first lateral side that extends adjacent to the first side seat portion and a second lateral side;a second side seat portion having a second seating surface;a second outboard seat bolster having a lateral side that extends adjacent to the second side seat portion;a second inboard seat bolster having a first lateral side that extends adjacent to the second side seat portion and a second lateral side; anda generally rectangular intermediate seat portion having a generally rectangular intermediate seating surface and first and second lateral sides, the first lateral side of the intermediate seat portion being directly adjacent to the second lateral side of the first inboard seat bolster, and the second lateral side of the intermediate seat portion being directly adjacent to the second lateral side of the second inboard seat bolster;wherein all of the lateral sides extend generally parallel to one another;wherein the bolsters are movable between a retracted position, wherein the bolsters are all in a generally flush position relative to the first and second seating surfaces, and an extended position, wherein the bolsters are all in a non-flush position relative to the first and second seating surfaces; andwherein the entire intermediate seating surface of the intermediate seat portion is fixed in position relative to the bolsters. 2. The seat bottom defined in claim 1 wherein the first side seat portion is generally rectangular in shape. 3. The seat bottom defined in claim 2 wherein the first outboard seat bolster and the first inboard seat bolster are both generally rectangular in shape. 4. The seat bottom defined in claim 1 wherein the first and second side seat portions are each generally rectangular in shape. 5. The seat bottom defined in claim 4 wherein the bolsters are all generally rectangular in shape. 6. The seat bottom defined in claim 1 further including an actuator for moving the bolsters between the retracted and extended positions. 7. The seat bottom defined in claim 6 further including a sensor that generates a signal in response to a sensed condition, and wherein the actuator is responsive to the sensor signal for moving the bolsters between the retracted and extended positions. 8. The seat bottom defined in claim 7 wherein the sensor is responsive to one of lateral acceleration force, the number of occupants seated on the seat bottom, and the location of occupants seated on the seat bottom. 9. A bench seat assembly comprising: a seat bottom and a seat back, wherein the seat bottom includes:a first side seat portion having a first seating surface;a first outboard seat bolster having a lateral side that extends adjacent to the first side seat portion;a first inboard seat bolster having a first lateral side that extends adjacent to the first side seat portion and a second lateral side;a second side seat portion having a second seating surface;a second outboard seat bolster having a lateral side that extends adjacent to the second side seat portion;a second inboard seat bolster having a first lateral side that extends adjacent to the second side seat portion and a second lateral side; anda generally rectangular intermediate seat portion having a generally rectangular intermediate seating surface and first and second lateral sides, the first lateral side of the intermediate seat portion being directly adjacent to the second lateral side of the first inboard seat bolster, and the second lateral side of the intermediate seat portion being directly adjacent to the second lateral side of the second inboard seat bolster;wherein all of the lateral sides extend generally parallel to one another;wherein the bolsters are movable between a retracted position, wherein the bolsters are all in a generally flush position relative to the first and second seating surfaces, and an extended position, wherein the bolsters are all in a non-flush position relative to the first and second seating surfaces; andwherein the entire intermediate seating surface of the intermediate seat portion is fixed in position relative to the bolsters. 10. The seat bottom defined in claim 9 wherein the first side seat portion is generally rectangular in shape. 11. The seat bottom defined in claim 10 wherein the first outboard seat bolster and the first inboard seat bolster are both generally rectangular in shape. 12. The seat bottom defined in claim 9 wherein the first and second side seat portions are each generally rectangular in shape. 13. The seat bottom defined in claim 12 wherein the bolsters are all generally rectangular in shape. 14. The seat bottom defined in claim 9 further including an actuator for moving the bolsters between the retracted and extended positions. 15. The seat bottom defined in claim 14 further including a sensor that generates a signal in response to a sensed condition, and wherein the actuator is responsive to the sensor signal for moving the bolsters between the retracted and extended positions. 16. The seat bottom defined in claim 15 wherein the sensor is responsive to one of lateral acceleration force, the number of occupants seated on the seat bottom, and the location of occupants seated on the seat bottom. 17. The seat bottom defined in claim 14 wherein the seat back further including an armrest that is movable between retracted and extended positions, and wherein the actuator is responsive to the position of the arm rest for moving the bolsters between the retracted and extended positions.