<p class="MsoNormal">It’s been a very good week for Elon Musk. Not only did his SpaceX successfully send four NASA astronauts to the International Space Station in its first operational mission on Sunday, but S&P Global announced on Tuesday that Tesla would be admitted to the S&P 500 index. Tesla, which had been snubbed by the index earlier this year, will be added to the S&P 500 by December 21.</p><p class="MsoNormal"></p>