WASHINGTON: The nonprofit Alliance to Save Energy (ASE) and The Wal-Mart Foundation (WMF) will launch a consumer education effort May 20, offering tips on reducing gas usage through fuel-efficient driving and maintenance.

WMF provided $675,000 in initial funding for the effort, which will center on a Web site, www.drivesmarterchallenge.org. To encourage consumers to accept the "challenge," the site will maintain a running tally of gasoline savings - dollar amount, number of gallons, and reduction in CO2 emissions - pledged by visitors ...