Air-bag computers can be used to discover how fast a car was travelling at the time of collision. This is, of course, very interesting to law enforcement (and, presumably, insurance companies).
An electronic device on board the Pontiac, however, told police exactly how fast the car had been going — 124 mph in a 40 mph zone. And it enabled Trotwood to join the growing number of police departments and insurance companies across the country experimenting with data stored on computers, originally designed and installed on cars and trucks to control air bags, to determine what happened in the seconds leading up to accidents.
Called a Sensing Diagnostic Module, the electronic “brains” behind an airbag were developed by General Motors and are now manufactured by its spin-off company Delphi at an electronics plant in Kokomo, Ind. GM’s air bags are made in Vandalia at Delphi’s Interior & Lighting Systems plant and are later hooked up to the black boxes on assembly lines for GM and other auto companies.
(Thanks, Tim!)