Elon Musk has a plan to cut the price of a Tesla battery pack by more than 30 percent http://popme.ch/6018q2mC pic.twitter.com/Jxupqi9rAC
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Speaking of energy --- RT @PopMech Elon Musk's plan to cut the price of a Tesla battery pack by more than 30 percent http://popme.ch/6018q2mC