They have run this same promo the last couple of years. T&C link is now live. Promo runs between 2/15/2019 - 4/15/2019.
1. Buy two participating 20-oz. bottles of Dr Pepper.
2. Text DRPEPPER to 64827. Send a picture of both UPCs when prompted.
3. Receive a $5 Uber code.
Limit of one (1) reward per day, per person, per phone number. However, a participant is able to receive up to a total of five (5) rewards throughout the reward period. While supplies last.
Terms and Conditions [drpepper.com]