Improperly inflated car tires can reduce gas mileage and car performance, speed up tire wear, and even cause a tire to blow out. The AAA auto club recommends that someone check the air pressure of one's car's tires at least once a month. Wouldn't it be nice, though, if someone came up with a tire pressure-monitoring system that automatically kept the tires properly inflated? A recent Goodyear press release announced that Goodyear engineers have developed a new tire that is self-regulating in regard to air pressure. Goodyear calls the new self-regulating system air maintenance technology (AMT) and it literally places an air pump, air gauge, and automatic air valve in each tire. Goodyear estimates that a vehicle with 10% underinflated tires shortens the life expectancy of the tires by 9% to 16%. With the current price of fuel, most commercial freight operators are very aware that underinflated tires cost them money. Goodyear hopes that they will jump at the chance to replace worn out tires with AMTs because these tires will quickly save them money by improve gas mileage and reducing tire wear. (Contains 2 photos and 1 figure.)