VEHICLE SEATBACK HAVING ROTATABLE ARM ON BOLSTER

With reference to the Figures, wherein like numerals indicate like parts throughout the several views, a vehicle includes a vehicle seat that includes a seatback and a seat bottom that defines an occupant seating area. The seatback includes an inboard bolster and an outboard bolster spaced from the inboard bolster in a cross-seat direction with the occupant seating area between the inboard bolster and the outboard bolster. A arm is rotatably supported by the inboard bolster. The vehicle includes a computer that includes a processor and a memory storing instructions executable by the processor to detect an occupant in the occupant seating area and based on the detection of an occupant in the occupant seating area, rotate the arm toward the occupant seating area in response to detection of certain vehicle impacts.