"A black Honda of some sort on its side... obviously had collided with a Holden station wagon.''
Shortly after he reached the Honda to see if people needed help, it caught fire. Another man arrived at the scene with a fire extinguisher and "saved the day'', Mr Mitchell said.
The scene was a mess and it was difficult to tell how many people were in the car, he said.
"It was loaded with holiday gear, they were obviously heading somewhere or returning with a car packed to the gunnels.
"It was a horrific situation.''
There was a lot of traffic on the road at the time of the crash and it had been raining heavily.
"It was obviously a severe collision because the Holden, the front of it was just totalled, the airbags were deployed.''
It was the same spot where 17-year-old Kelly Thompson was killed on September 30.
"Tragic when you see that little cross there with a santa hat on it and it's exactly the same place,'' Mr Mitchell said.
The death brings the holiday road toll to 13 - one more than last year's total for the entire holiday period.
The official holiday period, which began at 4pm on December 23, does not end until 6am on January 4.