Visit: www.spacex.com for more information on SpaceX, Dragon, Falcon 9, Falcon Heavy, reusable rockets, grasshopper, Mars, upcoming rocket launch, or Elon Musk. SpaceX CEO & CTO Elon Musk discusses the importance of making rockets reusable. Filmed at The National Press Club. For more information on SpaceX: www.spacex.com twitter.com www.facebook.com