3. Use Cruise Control
And what better way to keep a careful eye on your vehicular velocity than to use cruise control. Turn it on, set it at a desired speed and go fix yourself a sandwich because the car does the rest.
Cruise control can help increase fuel efficiency by moderating throttle inputs. Rather than doing 60 miles an hour, speeding up to 70, then dropping down to 65 the cruise sidesteps this unnecessary yo-yoing to deliver a more relaxed drive and more MPG.