Here’s how you can save 50¢ per gallon on gas this July 4 weekend

If you’re one of the tens of millions of Americans taking to the road this July 4 holiday weekend, you’ll likely have this nagging thought cross your mind at least once: how much will it cost me to fuel up the car? The answer is, on average, $3.82 per gallon, according to the American Automobile Association (AAA) as of the time of this writing. While that price per gallon is down from the $4.56 national average on May 21, it’s still well above the $3.15 national average during last year’s July 4 holiday period. The good news is that this weekend only, anyone who is an Amazon Prime member ca...