[Cogito]

For what it's worth, there is some strong evidence that Elon penned this post himself - not that it is clear from the post itself.

https://twitter.com/elonmusk/status/771446048262946816

> Finishing Autopilot blog postponed to end of weekend

https://twitter.com/elonmusk/status/774155658476212224

> Will get back to Autopilot update blog tomorrow.

https://twitter.com/elonmusk/status/774664927835553792

> Will do some press Q&A on Autopilot post at 11am PDT tmrw and then publish at noon. Sorry about delay. Unusually difficult couple of weeks.

[alanh]

I was already aware of these tweets, but that doesn’t mean he wrote it all himself, just that he is involved in it. The fact is, the blog post has a byline and the byline does not mention Elon Musk or any individual person's name.