Lots More Information Prev Next Related HowStuffWorks Articles How Crash Testing WorksHow Force, Power, Torque and Energy WorkHow NASCAR Safety WorksHow the 'Jaws of Life' WorkHow Air Bags WorkHow Roller Coasters WorkLemon Laws Explained More Great Links National Highway Traffic Safety AdministrationFederal Highway AdministrationInsurance Institute for Highway SafetyAutomotive Coalition for Traffic SafetyCar-Safety.org