Get Gas Cards from Swagbucks-
Swagbucks pays people for doing different things. You earn points by watching videos, browsing the Internet, completing surveys, and shopping online. You can then trade those points in for gift cards, including gas cards!!!
Advertise on Your Car-
At Free Gas Help, you can earn free gas cards in exchange for placing advertisements (magnets or car wraps) on your car. Your car must be in good condition and you could score up to $200 a month if you drive enough miles.
Free Gas USA
Free Gas USA is a non-profit that provides gasoline grant assistance to struggling families. Each month pre-qualified candidates can receive gas grant funds ranging from $50-$1500.
Sign Up For Surveys
A ton of companies as Survey Junkie, Opinion Outpost, and Harris Poll allow you to take surveys in order to earn points that can be redeemed for gift cards including gas cards.
CLICK HERE FOR MORE WAYS TO SAVE AT THE PUMP
Not sure about this hack, but if you do decide to try it let me know how it goes.