Services-Help-Drivers-Find-Cheapest-Gas: Personal Finance News from Yahoo! Finance

Services-Help-Drivers-Find-Cheapest-Gas: Personal Finance News from Yahoo! Finance: "Web sites that compare gas prices at different stations have been around for years, but the offerings are becoming more sophisticated. In addition to gas prices delivered to cellphones, some Web sites now offer fuel consumption calculators, scout out sources of alternative fuels and even explore mass-transit options."