Without him electronic cars wouldn't be what they are. Without him we wouldn't have reusable rockets and new space boom. He is person who kicked the hornets nest and made everyone move. He is only person who might really have change to realize Mars outpost. He is greatest person of our time. Personally I dislike him but we need persons like him. Most historic figures have been assholes. That is how world works. You have to be different than masses to make anything happen.