SPARKS, Nevada Tesla Motors Inc's (TSLA.O) "master plan" to broaden the electric vehicle maker's product line could cost "tens of billions" of dollars over time and would likely require a "modest capital raise", Chief Executive Elon Musk said on Tuesday.
Speaking at a formal unveiling of Tesla's $5 billion battery "gigafactory" outside Reno, Nevada, Musk said the new plant being jointly developed with Japan's Panasonic Corp (6752.T) could ultimately support 1.5 million electric vehicles a year.
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