Which Elon project has failed?
It is amazing, isn't it? There's no guarantee that TSLA will still be around in ten years, but I bet their cars will be, along with the industry that was forced into existence by a non-incumbent player.
If that kind of outcome gets you implicated for failure, BMW must be distraught as it looks at those dwindling 3 series sales figures.
FWIW all the people trapped in the cave were rescued.