Musk's mother posts scorecard of test he took at 17, says 'they had to retest you'

Tesla CEO Elon Musk's mother took to Twitter to post scorecard of a computer aptitude test that he took at the age of 17. "If I remember correctly, they had to retest you because they had never seen such a high score. No wonder you are such a brilliant engineer. #ProudMom," she wrote along with the scorecard.