The wreck is actually from a 1986 crash that saw no fatalities.
https://www.facebook.com/199535516767620/posts/4006006656120...
https://www.facebook.com/199535516767620/posts/4006006656120...
I'm obviously as unsure as anybody of the correctness of this analysis, but I found a source that wasn't Facebook for your alternative: https://sacramento.cbslocal.com/2021/06/16/folsom-lake-plane...