AP, PITTSBURGH, June 2006 - Taxi drivers are the city's ambassadors, the mayor told cabbies in urging them to bring their A-game to Major League Baseball All-Star Game festivities. "If your cabs are not clean, if there's not gas in it, and the mechanics don't have it tuned up ... you won't be successful," Mayor Bob O'Connor told cabbies Wednesday in advance of the July 7-11 festivities. "You are the ambassadors." While most cabbies keep a clean car, cabbie Jim Jacobs said those who use their cars as a second home could best use O'Connor's advice.