@kairyssdal just listened to your Tuesday episode of Make Me Smart. I wanted to say that given Elon's notorious manipulations of his money, it would not at all be surprising that he gave his money away to himself.
Take the Padagonia owner's "generous" donation of his company to "charity." What he actually did was give his company in a trust to a charity that he and his family control. Basically, it's a way to ensure that his wealth stays with his family.
Given that you said we don't know where Elon sent his Tesla stock, we really don't know that he's actually done anything good by giving it to "charity."