McCann Erickson, ZenithOptimedia and Weber Shandwick scoop Shanghai Expo duties

SHANGHAI - McCann Erickson and ZenithOptimedia have been appointed by Shanghai General Motors (Shanghai GM) to handle a campaign promoting the 2010 Shanghai World Expo. Separately, Weber Shandwick has picked up a PR brief from General Motors (GM) to handle PR around the brand's Pavilion at the event.