In Burger Wars, Reality’s Rarely Served

LOS ANGELES Known for its stunts — Paris Hilton sudsing a Bentley — Carl’s Jr. is launching a series of spots June 22 based on what it calls a “reality television” concept. It’s agency, Hakuhodo-backed Mendelsohn/Zien, set up a fake eatery in Malibu, replete with rave reviews, valet parking, posh d