A vehicle is provided with on-demand seating to allow maximum cargo space in the passenger compartment when the seats are not needed. The seating is lightweight and compact, maximizing available cargo space and minimizing mass and fuel economy impact. The flexible seat may be stowed within body structure defining the passenger compartment, such as side trim panels or a vehicle floor. The body structure supports the flexible seat in a deployed position in which the flexible seat extends from the body structure into the passenger compartment. Roller mechanisms mounted within the body structure allow the seat to extend and retract from the passenger compartment. The seats may be inflatable, and may include pneumatic foam.