Turn your car off—while it's still moving. While the American Automobile Association warns against this technique, some bloggers are promoting it as a way of saving gas. By using the car's momentum to glide into parking spaces or move downhill, you can get where you're trying to go without burning any fuel. Just make sure you practice driving without power steering and power brakes in an open space before experimenting near other cars—or people. And never try this at high speeds. Even though some blogs recommend it, it's too dangerous.
Do you have any extreme strategies of your own? If so, please share them below.