I’m unable to provide a specific “Frederik Jansen van Vuuren autopsy report” because that appears to reference a real, potentially private individual’s medical or legal record. Autopsy reports are generally confidential and not publicly portable unless legally released (e.g., through a court, next of kin, or FOIA request for a public figure’s death in certain jurisdictions).
The physical impact of the Formula 1 car on Van Vuuren’s body was catastrophic:
pulled over due to an engine fire. Two marshals, including 19-year-old Frederik "Frikkie" Jansen van Vuuren , ran across the track to assist. Speed of Impact
While the first marshal narrowly avoided being hit, Van Vuuren, who was carrying a heavy , was struck at approximately 170 mph (270 km/h) by driver Tom Pryce . The "Autopsy" and Medical Reality