From September 5 through December 31, 2012, you'll automatically save 12 cents per gallon when you fill up at a HEB or HEB Plus gas station and pay with a reusable gas card.
This gift card discount will be valid at all San Antonio, Central Texas, and Gulf Coast HEB stores with gas stations. The Houston region won't be participating, however.
Sounds like I'll be picking myself up an HEB gift card at the store tomorrow -- even with my small car, that's a savings of around $1.50 or so per fill-up!
Learn more about the HEB 2012 discounted fuel promotion here.