Exxon/Mobil has a new promo going where you can save .15/gallon of gas for 60 days.  Sign up for their Speedpass program and get either a car tag or key tag in the mail.  Log into My Account to activate your device(s), and click on the “Submit” button where the promotional offer is displayed on your “My Profile” page.

The amount of 15¢ per gallon will be credited as one lump sum, placed on your credit/debit card statement when you reach 100 gallons or after 60 days, whichever comes first.  You have until 6/30/2011 to register for this offer and 60 days after registration to save 15¢ per gallon.