Car enthusiasts and gear heads unite! The Sacramento International Automotive Show is coming this Friday through Sunday at Cal Expo. The auto show has been held in Sacramento for more than 25 years, according to Stacey Castle, president of Castle Communications and producer for the international show. The show this year will be larger than ever before, she said.  "The Auto Show is the largest show that takes place in Sacramento, other than the State Fair," Castle said. "It takes all 13 buildings at Cal Expo, plus the three on-site 'Ride N Drive' test tracks."  The European-spec 2010 Ford Fiesta and redesigned 2010 Mustang will be two of many cars available. Attendees can visit the "Ford