Granted, it will cost the auto industry more to produce cars and trucks that get better gas mileage, and manufacturers inevitably will pass those increased costs on to consumers. But U.S. Transportation Secretary Ray LaHood says the higher sticker prices will be far outweighed by what consumers save on gas. Even if car prices rose by $2,000 to $3,000, officials estimate, drivers would come out ahead by about $8,000 in fuel savings by 2025. "You put better technology in the car and the price is going to go up," Mr. LaHood predicted. "But it goes up a fraction of what you save on gas."