For unknown reasons, the driver lost control of his vehicle, and the vehicle partially spun around… The vehicle then struck a curb, and the driver’s side of the vehicle struck a tree and then a light post. The force of these collisions caused the vehicle to spin 180 degrees and continue in an easterly direction. The passenger side of the vehicle then struck another tree and burst into flames.
The description of the scene gives an indication of the forces involved in the impact. On an embankment, officials found a “sheared off cement light pole” next to a “broken tree”, with vehicle debris scattered across all four lanes and into the adjacent car parks.
Yeah, it was the seatbelt’s fault.