Report: Tesla Signs Panasonic Battery Joint Venture Pact By: Benzinga via Benzinga July 28, 2014 at 14:48 PM EDT Tesla Motors (NASDAQ: TSLA) inked a joint venture agreement with Panasonic (OTC: PCRFY) for Tesla's so-called Gigafactoryin ... Read More >> Related Stocks: Panasonic Hldgs Corp ADR Starwood Hotels & Resorts Tesla, Inc.