SONIC® Drive-In introduces affordable and delicious morning choices starting at 99 cents   OKLAHOMA CITY, 2017-Mar-01 — /EPR Retail News/ — SONIC® Drive-In (NASDAQ: SONC) is offering guests delicious morning choices with new Breakfast Deals starting at 99 cents until 10 a.m. everyday. The deal includes the choice of SONIC's highly anticipated Pancake on a Stick and other…