The grocery chain Safeway consists of Safeway, Vons, Pavilions, Randalls, Tom Thumb, and Carrs. Like so many supermarket chains, Safeway has a gas rewards program which offers points for purchases made at the supermarket. Those points can then be used to receive discounts at the pump.
Up until now, Safeway has partnered with Exxon/Mobil and the gas points were able to be used for discounts at Exxon/Mobil stations, as well as at Safeway-branded gas stations. A change has been publicized by Safeway that Exxon/Mobil will no longer be a valid redemption option and  points will only be able to be used at Safeway-company gas stations.
The change is set to take effect on 6/1/15, at which time the points will have more limited use.
[As an aside, from what I gather, merchant gift card purchases (i.e. an Amazon gift card) do earn gas points, in-fact they earn double points, but Visa/Mastercard/Amex gift cards don’t earn gas points.]
