David Sacks: "<Elon Musk> just still works incredibly hard. I visited him recently, <...> I left around midnight and he was still going. I think he must have gone till 2am or something like that. So I don't know anybody who works as hard as hi

David Sacks: "<Elon Musk> just still works incredibly hard. I visited him recently, <...> I left around midnight and he was still going. I think he must have gone till 2am or something like that. So I don't know anybody who works as hard as hi