An eleventh way to cut costs is to drive with a gentle touch. Wear lightweight shoes for more sensitive control. Keep your distance and brake less often. Don't be first away at the lights. Slow down in plenty of time for a stop you can see coming, braking as little as possible. Drive at as uniform a speed as traffic will permit (although whether it has to be at 56 as distinct from 55 or 57 mph is debatable! ).

John