Sonic Drive-In Introduces Unicorn Dreams Slush
Sonic Drive-In has a new, limited treat: the Unicorn Dreams Slush. It arrives nationwide on May 5, but Sonic fans can unlock early access via its app, which recorded 3.3 billion impressions in just three days. MSL is the creative agency promoting the drink and its special unicorn horn straw, which comes in four shades: white-to-pink color change, green-to-blue color change, neon green glow inâŚ
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