Ford Motor Co. said Wednesday it plans to greatly increase the use of more fuel-efficient six-speed automatic transmissions, doubling their number by the end of next year and putting them in 98 percent of its North American vehicles by 2012.Ford...

The kind of car you own has a lot to do with the amount of gas you can save. Therefore, to help you pick the right fuel efficient car here is a list that tells you how to get started: 1. Always opt for lightweight vehicles: For every extra 100...