At this recent time, we all know that the price of the gas is getting higher and higher without any chance of getting lower. Yes, indeed, the government says that it is the effect of the high price of the gas on the global market. Well, as the result, we are in agony because of this matter. We need to travel by using our vehicles but we cannot afford to purchase the gas. It is such a dilemma here. On one hand, we need to travel, but on the other hand, we cannot use all of our check to purchase the gas. Well, at this point, you might think in how to increase gas mileage of your vehicles.