SONIC Celebrates Upcoming Total Solar Eclipse with New Limited-Edition Blackout Slush Float

OKLAHOMA CITY--(BUSINESS WIRE)--SONIC® Drive-In is giving fans an out-of-this world experience for the rare North American Total Solar Eclipse on April 8th with the launch of the new Blackout Slush Float, available nationwide starting March 25th for a limited time. Guests will also receive one free pair of solar eclipse viewing glasses* with every purchase of the Blackout Slush Float, while supplies last, to help safely watch the eclipse and create fun memories of this momentous occasion. Featu