This presumably happened about in the 1920's or so, a quite different time, as many SC will say (that go back that far, many do). Or by my memory without any research.
Source(?): I used to read old SCBs, and many of the newspaper and magazine articles going back to the late 1960's about the Old Man of the Sierra (Chron, about 1971), so it's somewhere in there I'd guess. Not very PC by many, but then you could be the wrong type of person to be able to join the Sierra Club. Females were O.K., but not ethnic minorities.
What news survives doesn't imply actual facts. I get constant avowals about WWII sabotage, much by the MLC SC and in the workplace, back then. Not that any or all cases or reports were ever found true. You might run by an archival site and check old newspapers. Hysteria, big time. Some of this makes good history, as what is fact by the papers, then. Going to the ESM, they probably have such information, unless they decided to expunge it all. Or maybe gone to the Manzanar National Historic Site.
Just like teens in the 1960's, who would truly shoot their own car to have evidence of gunfire. Or just a big lie by Clyde, to cover up a terrible mistake (shooting into the car versus the air). It gets passed over, given that he's long dead and this is only of minor historic interest. I'd presume the car was long ago junked, as ballistic tests started in about my early lifetime, or so I guess. No divulsions there to clear his name.
People were being murdered on a daily basis in some parts of the country, so what happened to Clyde, well, he took it with grace. The Sierra was his stomping ground so he went and did what he did best. He may have been buried in that NV town to have his remains not desecrated, perhaps by these same perps, they must have really hated him. Somebody vandalized his cabin, and never caught. Or, his redemption maybe to find Starr, and then to act as cook for SC trips. Lots of speculation to write about, not a rehashed old story. I'd then really be interested, and while I think I have a copy of Benti's book, it looks somewhat superficial being more of a booklet. Maybe I'll read it better, now.