From what I've read in the Musk biography and elsewhere, he is involved in really really low level decisions, to the point that he's been labelled a "nano-manag

From what I've read in the Musk biography and elsewhere, he is involved in really really low level decisions, to the point that he's been labelled a "nano-manager." Surely he's not involved in absolutely every decision, but by all accounts he is much, much closer to the details than you would expect a CEO to be. Especially when it comes to design/ engineering details.