During the first month of driving my new Kia Optima Hybrid, my average miles per gallon did not appear to be more than a mile or two off per gallon off the estimated MPG displayed on the window sticker.

FORBES: EPA Slams Hyundai And Kia For Overestimating MPG

Unidentified Man(speaking in commercial for Ford Escape): The 36-mile per gallon Ford Escape.

NPR: Hybrids and the 'Halo Effect' of Car Ads

Last year, Kingdown School took the top prize for schools when its aerodynamic car reached a 1, 980 mile per gallon efficiency.

BBC: Car built by Wiltshire pupils clocks 2,000 mpg

Even more dramatic fuel savings can be achieved - both in terms of the costs and the consumption of foreign oil - if millions of Americans start driving not just fuel-efficient hybrid vehicles, but FFV-capable plug-in hybrids (PIH) with 500 mile-per-gallon-of-gasoline (mpgg) performance.

CENTERFORSECURITYPOLICY: For your country

Due to various agreements, Fiat must achieve certain milestones before expanding its ownership in the company, such as producing a 40-mile-per-gallon vehicle off a Fiat platform in the U.S. This would grant the Italian automaker an option to acquire an additional 5%, taking its total equity stake to 57% later this year.

FORBES: Fiat To Take Chrysler Stake To 57%, Plans To Buy 6% From Treasury

Thirteen teams are competing to build a plane that can fly at least 100 miles per hour and achieve the equivalent energy efficiency of 200 miles per gallon of fuel on a 200-mile flight.

FORBES: Google Pushes Electric Planes In Green Flight Challenge

Advanced satellite tracking technologies allow "open road" tolling, in which motorists would be charged per mile of road used -- just as consumers are charged per kilowatt hour for electricity, per gallon of water, or per minute of cell phone use -- without the backup at the toll booth.

CNN: Road tax alternative: Pay for each mile you drive