The first full trailer for HBO’s “Clear History”, the Larry David (“Curb Your Enthusiasm”) written/starring comedy about “a marketing executive at a start-up electric car company who gives up his ten percent of the business after a petty argument with his boss. The company subsequently makes billions of dollars, destroying his life and leaving him publicly humiliated. Ten years later, after changing his name and moving to a small island off the Massachusetts coast, all is well – until something from the past threatens his new life”, is online. The movie stars, aside from David, “Mad Men” star Jon Hamm, Danny McBride (“Eastbound & Down”), Bill Hader (“Superbad”) and one-time Caped Crusader Michael Keaton. The film, directed by “Paul”‘s Greg Mottola, airs on HBO in August.