Musk answered, “I’m going to colonize Mars. My mission in life is to make mankind a multiplanetary civilization.”

As his team grew, Musk infused it with his tolerance for risk and reality-bending willfulness. “If you were negative or thought something couldn’t be done, you were not invited to the next meeting,” Mueller recalls. “He just wanted people who would make things happen.”

added, “But if I had run Apple, we may never have made the Macintosh.” And thus the question about Elon Musk: Could he have been more chill and still be the one launching us toward Mars and an electric-vehicle future?

Elon was moved aside to chief technology officer. At first, he thought the change would suit him; he could focus on building the product. But he learned a lesson. “I never wanted to be a CEO,” he says, “but I learned that you could not truly be the chief technology or product officer unless you were the CEO.”

He had conceived by then a life vision that he would repeat like a mantra. “I thought about the things that will truly affect humanity,” he says. “I came up with three: the internet, sustainable energy, and space travel.”

In the early days of Henry Ford and other pioneers, carmakers did most of the work in-house. But beginning in the 1970s, the companies spun off their parts-makers and upped their reliance on suppliers. From 1970 to 2010, they went from producing 90 percent of the intellectual property in their vehicles to about 50 percent. That made them dependent

Reid Hoffman, another PayPal veteran, had a similar reaction. After listening to Musk describe his plan to send rockets to Mars, Hoffman was puzzled. “How is this a business?” he asked. Later Hoffman would realize that Musk didn’t think that way. “What I didn’t appreciate is that Elon starts with a mission and later finds a way to backfill in order

After a few years, SpaceX was making in-house 70 percent of the components of its rockets.

In January 1999, less than four years after Elon and Kimbal launched Zip2, Proudian called them into his office and told them that Compaq Computer, which was seeking to juice up its AltaVista search engine, had offered $307 million in cash. The brothers had split their 12 percent ownership stake 60–40, so Elon at age twenty-seven walked away with