That's where the new Shell $aver Card comes in. According to Shell's new ad, "It's an easy way to save 5 cents on every gallon you buy at Shell." The card is termed a "payment card." You have to apply for the card (applications are available at participating Shell stations). Once approved, it works like this: Swipe the card at the pump and the discounted gas price (less 5 cents on every gallon during the introductory period) is AUTOMATICALLY DEDUCTED from your checking account.
Better than using your plain old debit card at the pump, huh? And even when the introductory rate goes down to 2 cents off the gallon after June 30, 2009, you're still pennies ahead.
Years ago, gas stations developed and marketed their own charge cards, but those cards have fallen by the wayside. And there's apparently a potential downside to using regular debit cards at the gas pump, according to this MSN Money article.
Nevertheless, this new card is good way to drive motorists to Shell pumps. Shell more than likely saves money with this type of payment card rather than going through other credit/debit middlemen. So it's good for Shell and good for the consumer from a savings standpoint. And that's gotta be good for the economy.