https://www.reuters.com/article/us-tesla-musk-sec/elon-musk-never-sought-approval-for-a-single-tesla-tweet-u-s-sec-tells-judge-idUSKCN1R001J >Chief Executive Elon Musk has never sought pre-approval for a single tweet about Tesla Inc since striking a court-approved deal about how to communicate important information about the electric vehicle maker, the top U.S. securities regulator told a judge on Monday.