BOGO on Diet Pepsi

Print this rare Buy-One-Get-One-Free coupon for a Diet Pepsi two liter bottle here.  Target and Walgreen's both have Diet Pepsi for $1.25, so it will be $0.63 each after the coupon. 
Please note, the coupon has an HEB logo on it, and says "available at HEB" but it doesn't say ONLY HEB, so since it's a manufacturer's coupon, it's should be accepted at ANY store.