I'm not sure it's that he's stretched thin or just that he never pads his estimates. When Elon Musk says he's going to deliver X in three months, the unspoken

I'm not sure it's that he's stretched thin or just that he never pads his estimates. When Elon Musk says he's going to deliver X in three months, the unspoken coda is always "assuming every bit of uncertainty falls my way". And of course, it never does in a nontrivial project. For anyone.