Many motorists will happily scout around for the cheapest fuel prices in their area.
Pay 2p less per litre when filling up an average car and you'll save 1.20. Not bad, but drop your speed from 90mph to 70mph on the motorway and you will save that in around eight minutes. Much better.
That's not all. Lowering your speed and using a higher gear will put less strain on your car's engine, so the chances are that it will last longer.
You'll also enjoy a much more relaxing drive, boost your chances of staying safe and cut carbon dioxide emissions as well.