That's a completely different matter, I just meant to say that Elon Musk's estimates are often extremely optimistic.
You know (if you're a developer) when you're working on a very exciting piece of code that will do wonderful stuff, and you have clear in your head what you're doing and how to do it, and think "it'll take me an hour, can't wait to see it working" and then at 4 AM you're still there, always in the same state of mind, with half of your brain asleep and the other half still perfectly focused on the result? Yep, I think that's Elon Musk. Still in the splendour of his early twenties :)
You know (if you're a developer) when you're working on a very exciting piece of code that will do wonderful stuff, and you have clear in your head what you're doing and how to do it, and think "it'll take me an hour, can't wait to see it working" and then at 4 AM you're still there, always in the same state of mind, with half of your brain asleep and the other half still perfectly focused on the result? Yep, I think that's Elon Musk. Still in the splendour of his early twenties :)