By Rob Lenihan Cybertruck images at Tesla’s Austin plant are circulating on social media. What’s a party without a surprise guest? As Tesla (TSLA) – Get Tesla Inc Report CEO Elon Musk prepares his Cyber Rodeo celebrating the opening of his Austin, Texas Gigafactory, there has been speculation that there may be an additional attendee at the event. ‘The Cybertruck is Officially Here’A rock star? Big time Hollywood performer? Not hardly. No, we’re talking about the Cybertruck, which Musk introduced in 2019 to a mixed reaction. Production has been delayed, but that hasn’t dampened enthusiasm for t…