Sonic Drive-in's virtual tour of its 2021 outlook was the partnership it struck with COOP Ale Works to produce a line of hard seltzers, but plenty more flavors are due as the weather warms. Sonic Drive-In Culinary Innovation Manager Erin Buono took inspiration from the company's embrace of adult beverages for a summer line of nonalcoholic slushes. "We've taken inspiration from classic cocktails this year," Buono said last week during a virtual tour of Sonic's new offerings. "(They're) fun, refreshing drinks with more adult flavors that you can share with friends for summer." Starting Aug. 30, you'll be able to get slushes in Strawberry Frosé, Red Berry Sangria, and Peach Bellini.