In a blog post, Elon Musk attempted to explain why he said last week that he had "funding secured" for a deal to take Tesla private. His explanation doesn't hold water for anyone who understands finance, sovereign wealth funds, or the passage of time. Elon Musk has written a blog post explaining why he said last week on Twitter that he might take Tesla private at $420 a share. "Funding secured," he declared in the tweet. But after reading Musk's new post, the only conclusion to be drawn is that funding was, in fact, not secured.