Sonic's 3-D Slushes Named the Year's Best Billboard Campaign at 2015 Obies

Kenneth Cole, Seattle Aquarium work also honored

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Adams Outdoor Advertising took home the Best Billboard Campaign award for its "Big Slushes" ads for Sonic Drive-In at the Outdoor Advertising Association of America's Obie Awards on Tuesday night. The campaign turned billboards in the Charleston, S.C., area into giant slushes complete with 3-D straws. 

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