An Old Refrain: Slow Down.

HIGHER gas prices have forced some American drivers to trade in their S.U.V.'s for smaller, more fuel-efficient cars; combine errands in an effort to drive less; or even add air to their tires to eke out a few more miles per gallon. But most drivers have largely ignored one easy way to conserve fuel: ease up on the gas pedal. [ABSTRACT FROM PUBLISHER]