Another angle: maybe the autopsy confirmed the accident as the sole cause, which could be part of the post. Also, mention that the report would have ruled out other factors, which is standard in such cases. Perhaps compare it to other drivers' deaths at the time to highlight the progress in safety.
Finally, ensure the blog post is SEO-friendly with keywords like François Cevert death, 1973 Spanish Grand Prix, Formula 1 safety history, etc. francois cevert autopsy report
Also, think about the audience: history enthusiasts, motorsport fans. The tone should be informative but engaging, maybe with some anecdotes about Cevert as a driver. Another angle: maybe the autopsy confirmed the accident