Walker, who was in the car with friend Roger Rodas, died from multiple traumatic injuries suffered upon impact.
According to the coroner, who conducted the autopsy of both the men, the duo's toxicology results will be available in six to eight weeks.
The medical examiner says both deaths have been ruled as an accident and as per the sources in the coroner's office, both men were positively identified by using dental records.
The accident occurred Nov 30 in Santa Clarita, California.
--IANS (Posted on 05-12-2013)