People like to pass often,
People like to pass often, for full highway speeds, use cruise control and not drive with terrain. I'm an exceptionally effecient driver and always exceed the MPG rating of ANY car. If you were a better driver and didn't use your cruise control that causes the car to rev high on hills only the brake on levels it would improve. It's hard to teach someone how to drive better but you also need to listen to your car and not drive near gear changes and maximize your mpg by using the transmission properly. Just because a cat is automatic doesn't mean the transmission doesn't matter.