Can you really save fuel by driving slower? Yes! Driving at 70 mph will use up to 9% more fuel than at 60 mph—and up to 15% more fuel than driving at 50 mph.

And deciding to take it a bit slower might reduce your stress level. Enjoy the journey! Leave a bit earlier than you think you need to, and then you can relax knowing you have plenty of time to get where you’re going. You might even arrive at your destination in a better frame of mind for having taken control of your pace and your life.

More ideas: Techniques for Drivers to Conserve Fuel.