They [Apple] have hired people we've fired. We always jokingly call Apple the "Tesla Graveyard." If you don't make it at Tesla, you go work at Apple. I'm not kidding. ... cars are very complex compared to phones or smartwatches. You can't just go to a supplier like Foxconn and say: Build me a car. But for Apple, the car is the next logical thing to finally offer a significant innovation. A new pencil or a bigger iPad alone were not relevant enough.

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Sending large numbers of people to explore and settle Mars in the decades ahead isn't inevitable, but it is entirely possible. The biggest challenge isn't the engineering and spacecraft, however difficult they may be. Instead, it's making sure that a sustained Mars campaign proceeds as a national priority, and that will happen only if the American people are behind it. We have the opportunity now to make this happen. We might not be so fortunate in the future.

Only by breaking through to new paradigms of space travel will more than a handful of us ever get to Mars and make it a potentially livable place...
Getting to Mars is too big an accomplishment for us to feel proud by just by swinging by. We are a nation of enterprise as well as exploration, and we're not about to go there without making something of it.