Tesla’s Elon Musk celebrates Independence Day at Giga Texas, shades Zuck TESLARATIWatch: Mark Zuckerberg’s 4th of July video goes viral CNNElon Musk mocks Mark Zuckerberg’s July 4 video after passing him on the billionaires list, says he’d rather be working than having fun FortuneMark Zuckerberg’s Viral Surf Video The New York TimesMark Zuckerberg’s Lake Tahoe antics are getting even weirder SFGATE