Elon Musk, CEO of Tesla, unveils the dual engine chassis of the new Tesla 'D' model at the Hawthorne Airport October 09, 2014 in Hawthorne, California.
Elon Musk, CEO of Tesla, unveils the dual engine chassis of the new Tesla 'D' model at the Hawthorne Airport October 09, 2014 in Hawthorne, California. - 
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Musk is CEO of SpaceX and Tesla, with an interest on the side in getting people to Mars. Last week, we headed to the Tesla factory in Fremont, California for a chat with Musk about battery technology and the future of global transportation.


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Follow Kai Ryssdal at @kairyssdal