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Buy A Sonic Cheeseburger And Get Another Free! Requires purchase at regular price. **Of equal or lesser value. Offer includes single-patty SONIC® Cheeseburger (approx. ¼ lb. precooked) only. Contains flour (sesame). Add-Ons cost extra. Limit one with coupon. One coupon per visit. Please mention coupon when ordering. Not good in conjunction with Combos, Order Ahead, delivery or any other offers. Offer good only at participating SONIC® Drive-Ins. No cash value. Copies, sale, or internet distribution or auction prohibited. TM & ©2023 America’s Drive-In Brand Properties LLC 04/15/23