To coordinate General Motors Corp.'s Latin American business, Interpublic Group of Co.'s McCann-Erickson set up a Miami-based regional unit headed by regional director Paulo Leoni, who moved from Sao Paulo. The group's first ad features a monotonous, gray fake city in which all the cars are identical and drive backwards, except for one bright red Corsa. ... The Bellwether Report, a U.K. quarterly survey of marketing budgets, reported that U.K. marketers have revised their budgets downward for the fourth consecutive quarter. This is the largest cut since the fourth quarter of 2001. ... Austrian gas station chain OMV named Demner, Merlicek & Bergmann, Vienna, to its $5 million European account.