Will Tesla be able to keep Musk's revolutionary battery tech promise?

Will Tesla be able to keep Musk's revolutionary battery tech promise?

A Tesla Inc. Model S electric vehicle is displayed at the company's showroom in Newport Beach, California, U.S. Photographer: Patrick T. Fallon/Bloomberg

The secret behind Elon Musk’s goal of selling 20 million Tesla’s a year by 2030 lies in its pioneering battery technology.

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