) offers a coupon for a free 20oz sparking beverage when you enter codes from three different colored caps from Coke products.
Promotion title: GRAB ANY SPARKLING
20 OZ. COCA-COLA® ON US
YMMV: This deal may be targeted. I got an email for it. (Subject: "Check out what's new this month from Coca-Cola!" sent 3/13/18)
PSA: Coupon only works at Speedway or Quicktrip, even though that is not mentioned anywhere in the terms of the promotion. Living on the west coast (no locations for those retailers), I got ripped off by this deal and after contacting Coke they only gave me back 2 of the 3 codes, their "annual replacement limit."
The coupon is delivered in the form of a URL sent via SMS that is only viewable once (similar to previous coupons for free 20 oz beverages at 7-Eleven).