File photo of an unknown Toyota car is seen covered in preparation for the Chicago Auto Show

An unknown Toyota car is seen covered in preparation for the Chicago Auto Show in this February 9, 2010 file photo. Toyota Motor Corp looked set to retain its title as the world’s top-selling carmaker in the first half of this year, company figures showed on July 26, 2013, outpacing General Motors and Volkswagen as it boosted overseas sales to a record high. REUTERS/John Gress/Files (UNITED STATES – Tags: TRANSPORT BUSINESS IMAGES OF THE DAY)