Jeep Wranglers sit on the assembly line at Chrysler Group LLC's Toledo Assembly Complex during a visit to the plant by U.S. Vice President Joseph Biden in Toledo, Ohio, U.S., on Monday, Aug. 23, 2010. Chrysler Group LLC, the third- largest U.S. automaker, will have a "difficult" time turning a net profit for the year, Chief Executive Officer Sergio Marchionne told reporters today. Photographer: Jeff Kowalsky/Bloomberg Chrysler