Bush's fuel efficiency ideas might not produce better mileage?

WASHINGTON - President Bush is showing new interest in automobile gas mileage, spurred on by public outrage over fuel prices. But don't expect the administration to embrace significant increases in requiring how far cars go on a gallon of fuel. The president wants Congress to let him rewrite mileage rules for new car fleets. Some critics suggest that request could instead spur automakers to produce more gas guzzlers.