Graham has been designed with airbag-like ribs with sacks that do a similar job to that of an airbag
Car seat belts are designed to use the strength of the ribs to help us withstand the forces of a crash. That’s why the three-point seatbelt rests across your ribs and sternum and across your pelvis. It loads the centre of your chest, spreading the force over the ribcage until the ribs break when the force becomes too great.