Occupant Safety
All 918s are equipped with front, side, thorax and head airbags in addition to Porsche's Stability Management (PSM) system, which groups driving aids such as traction control and stability control. PSM can be deactivated in two stages or set to a sport mode for spirited driving.
A tire repair system with a sealing compound replaces the spare wheel.
Read more: http://www.leftlanenews.com/new-car-buying/porsche/918-spyder/#ixzz3mw0PBhBN