In what is becoming a familiar scene in courtrooms nationwide, information collected from a car’s “black box” was used to convict a motorist of criminal charges. On June 30, a Peabody, Mass., District Court jury found Michelle Zimmerman guilty of misdemeanor motor vehicle homicide in the death of her front seat passenger, Kenneth Carlson. The jury concluded Zimmerman was driving negligently when she skidded out of control and struck a tree on Jan. 4, 2003. Information collected from the event data recorder (EDR), or black box, in her GMC Yukon reported that Zimmerman was driving 58 mph in a 40...