Theoretically speaking, the law firm told us: "Even in a case where there isn’t a driver sitting in the vehicle, there still may be someone liable for the accident." The attorneys added that in this particular case, where the most probable cause of the incident was that the vehicle wasn't properly secured, "the operator could be charged with negligent homicide (manslaughter)." Since the vehicle was a taxi, the perpetrator could potentially face an even stiffer penalty, the firm says.