Elon Musk says he has lined up legal advisers for the process make Tesla a private company. : San Francisco/Tokyo: Elon Musk continued to drip feed details of his controversial plan to take Tesla Inc. private, saying late Monday that he’s getting advice from Goldman Sachs Group Inc. and private equity firm Silver Lake. In a tweet late Monday California time, the electric car maker’s chief executive officer said he’s also lined up legal advisers for the possible transaction. A Tesla spokesman said Musk’s tweet refers to his own advisers and attorneys.