Most credit card issuers use several means to ensure that the credit card holders get you to make purchases. This is why they have designed several kinds of credit cards that are attractive and promising to offer cheap rates and good rewards. Gas credit cards are good examples of such credit cards. It is known that the US spends hugely on gas every year and this is why credit card issuers want to be there to tap on your gas purchases while offering you great discounts. These cards are great in saving gas money and are ideal for road travelers.