Car safety features are important components of modern vehicles, designed to protect passengers in the event of a crash. Headrests, which are 8 letters long, are designed to support the head and neck in the event of a collision. Airbags, 6 letters long, are designed to cushion the impact of a crash and reduce the risk of injury. Rollbars, 7 letters long, are designed to protect the occupants of a vehicle from being crushed in a rollover accident. Crumplezones, 9 letters long, are designed to absorb the energy of an impact and reduce the force of the crash on the occupants of the vehicle.