WESH News reports that officials suspect the mother and daughter found dead in a 2006 Porsche Cayenne in June on Florida’s Turnpike “died of hydrogen sulfide intoxication, likely as the result of a defect in the car’s battery.” Assistant Medical Examiner Gary Utz tells WESH, “It’s unprecedented. I haven’t been able to find another case.” Three first responders reported breathing problems at the scene and were taken to the hospital.
