There are many ways to cut down on fuel consumption and emissions.Some seem like common sense and reasonable, routine maintenance of an automobile.Others point to driving habit changes.Here are a few of both, which have both shown to make a real difference:

Slow down – keep to or below the speed limit, whenever practical.The gas pedal is called that for a reason.No need to race up to a red light.Easing up on the gas can save a mile-per-gallon.

Don't idle for more than 10 seconds – there is an idea kept in American driver's minds that it takes more fuel to start a car than to keep it running.This may have been true 20+ years ago, but today's engines are created differently, and can save fuel when turned off for longer than 10 seconds.

Tune-up – keep your car in good running order (oil changes, air filter maintenance, tire pressure, etc.); a monthly check list, easily done at home can help keep your car running smoothly and effectively.

Clean out the trunk – extra weight slows your car down; remove excess carriage to improve performance.Every little helps!

Don't drive – consider consolidating trips, and avoid quick outings for just one item.

CNN has provided an article on fuel-saving myths and then responded to skeptics with a follow-up article in 2008.