>> last year they did 14 billion something in one day. 14 billion in one day. that's a huge market. >> in that one day, jack ma sells more than the annual gdp of over 80 countries. martha's next icon is also a billionaire and visionary. he's one of the founders of pay-pal and now with tesla, he's reinventing the automobile. >> i love the idea of the electric car. >> elan musk's company tesla is making electric cars sexy. >> he is one of those people who sees the future in many ways, two, three, four, steps ahead. >> the electric car is not a new idea, but elan musk has updated it for the 21st century. >> last year i went to the little tiny car museum in