Update...... Some of the mystries have been solved. The tire (front pass) was worn at angle.... The vx was driven after the accident, with the wheel bent at slight angle.
The 2nd was the underside. I have found that in the accident the corner of the battery tray punched a hole in the valve cover. I suspect that the residue is all oilly soot from the engine hole. All the residue is under and around the front corner.
Once again the vehicle was driven after the accident with a hole in the valve cover throwing oil.