OKLAHOMA CITY--(BUSINESS WIRE)--SONIC® Drive-In (NASDAQ: SONC) is giving cake fans across the nation another reason to celebrate any time of day or night with new Ice Cream Cake Shakes and Ice Cream Cake Waffle Cones. SONIC’s latest frozen creations are available in three indulgent options including Vanilla Birthday Cake, Oreo® & Cake, and Strawberry Shortcake. Each cake flavor starts with SONIC’s rich and creamy Real Ice Cream and then layered with decadent real cake pieces and cake batter