Among those recently receiving top press is the Kiwi, an iPhone-looking device that rests on the dashboard and monitors your driving habits, such as acceleration and deceleration, in order to improve your fuel-efficiency. Playing to those who love videogames and competing against themselves, the Kiwi ranks your performance with a score of 1-100.  If you reach 100, you’ve increased your miles per gallon by 33 percent.

We mention Kiwi because there are no breakthroughs here, other than a good-spirited attempt at making conservation fun. Anyone with a driver’s license learned at one point that sudden acceleration or braking gobbles up gas. The DOE and EPA spell out fuel-conserving techniques here, so don’t feel you have to spend several hundred in order to save several hundred. Obeying the speed limit and good manners can increase your fuel efficiency by 33 percent too.

The EPA also keeps a long-standing list of fuel-saving devices it has reviewed. These tend to be products that are added to the engine or fuel tank, and in general, the EPA hasn’t found any of them worthwhile.

We of course applaud any efforts made to embrace the ultimate form of fuel efficiency, also known as walking, biking, and public transportation.