The NY Times Dealbook column offers the cautionary tale of Elon Musk, who co-founded PayPal, SpaceX, and Tesla Motors. Once he had $200 million in cash, but no more: "Now Mr. Musk, who is in the middle of a divorce, says his account is empty. Actually, less than empty. He says he invested his last cent in his businesses and is living off loans from his wealthy friends. He subsists, according to court filings, on $200,000 a month and still flies his private jet. 'About four months ago, I ran out of cash,' Mr. Musk acknowledged in a divorce court filing that was widely circulated among the West Coast digital elite." [Via Daily Intel]