Driving to your summer vacation destination means spending a lot on gas, so why not get the PenFed Platinum Rewards Card? It offers a $250 initial bonus as well as 5, 3, and 1 points per dollar you spend on gas, groceries, and everything else, respectively. While there is no annual fee or foreign transaction fee, you do have to pay $15 to join the Pentagon Federal Credit Union.

Rainier Ehrhardt/AP/File
A sign for $2.99 a gallon gasoline is seen as vehicles wait for a traffic light to turn green at a Hot Spot convenience store in Spartanburg, S.C., earlier this month. If you take vacations in the car, the PenFed Platinum Rewards Card earns 5 points for every dollar you spend on gas.