Here's some more ways to save gas by modifying your driving... Mindful Driving Is Safer AND More Fuel Efficient Mind Your RPMs and Momentum – One hypermiler says, "Hypermilage is more about your engine RPM than anything else. The faster it revs (i.e the faster you go) the more air and fuel goes through the engine." In other words, don't abuse your car or drive aggressively; this wastes gas. Gentle acceleration is best, and let momentum be your friend. Once you practice a bit, you'll find that you don't always need to press down on the accelerator to get around places like a parking lot, drive up to a red light, or drive downhill. Keep your foot off the gas pedal and use the car's natural momentum to your advantage. Some experts even figure out how to time their local traffic lights. They know about how long a red light takes to turn green; so they time themselves to cruise to the light, and as it changes to green, they still have enough momentum pushing them forward to slowly accelerate again. This keeps their car at the most fuel efficient gears, wasting minimum gas. Also, driving a stick shift gives you maximum control over your RPMs. Plan Your Trips Efficiently – Avoid heavy traffic by using the Internet, radio, or a good GPS to get current traffic reports, and use the best routes. Leave earlier so you're not in a rush, which helps you avoid a heavy foot and mental stress. A warm engine is more efficient, however idling to warm up your engine doesn't benefit today's cars. It wastes gas. Instead, if you're running errands, drive to the farthest distance location first. This helps warm up the engine to optimal temperatures, then drive yourself closer and closer to home. The Weather – Avoid inclement weather like heavy wind, rain, or snow. In the rain, drive higher up on the crown of the road where water puddles less. In snow, choose roads and travel lanes with less snow. Use Cruise Control, Even on City Roads – Read your owner's manual for recommended speeds. However, if you're in little to no traffic and cruising on the main roads, cruise control keeps the fuel flowing smoothly and even, which conserves gas. On highways, cruise control is your friend. 55 Miles an Hour Is the Most Efficient Speed – If you value your time, this is not an attractive option. And a dangerous one if everyone else is doing 70 MPH, as the danger of someone rear ending you goes up. But driving 55 MPH has been proven in numerous tests. Also, studies find every 5 MPH over 65 MPH cuts fuel economy nearly 5%. If this sounds too slow, plan your driving and leave earlier. Besides, you can invest the extra car time by listening to relaxing music or books on tape and get a "highway education." Don't Idle – Turn off your car instead. In today's cars, turning on your engine uses as much fuel as idling for a mere 7 seconds. If you're waiting for someone at the curb or fiddling with your stereo in the parking lot, turn off the engine. Install a Mileage Calculator – It's been said, "What is measured, improves." A mileage calculator gives you real time feedback on your miles per gallon, and it encourages you to use more money saving habits. You can achieve some of the same benefits simply by computing your MPG every time you fill up.