I doubt it's for the money. I'm sure he made a pretty penny on his stock options, and stood to make more. But he could get yelled at by Elon Musk every day, or

I doubt it's for the money. I'm sure he made a pretty penny on his stock options, and stood to make more. But he could get yelled at by Elon Musk every day, or he could walk into any VC in Silicon Valley, drop his own name, and have a fat stack of VC cash to gamble on something of his own design.