The Eco Modder. This usually means that a car owner has changed the efficiency of a car in some way to make it better.
The eco-mod that stands out is what was discovered by Darin Cosgrove.
Here is Dan learning about Pulse and Glide Fuel Economy – no modifications required:
By adding a boat tail to his 1998 Pontiac Firefly he was able to cut down the drag of his car. This added 15 mpg to the cars performance even thought the car was carrying more weight.
The eco modder modification was constructed out of cardboard, aluminum, and duct tape.
This is no freak occurrence. Darin Cosgrove is the host for ecomodder.com where he lists over 65+ ways to improve the efficiency of a car.
The first of which is the addition of a scan gauge. With 37 gauges in all monitoring fuel consumption, in all cars from 1996 models and newer including hybrids: This device helps you control nearly everything that affects your check engine light; and even turn it off.
The addition of pizza pans to affixed to the outside of each wheel cuts down the air drag in the fanning of the wheel. And it adds an attractive look. There is a picture of this on Cosgroves site.
Another eco modder, Mike Turner has a mod of a Honda Civic that gets 95 mpg.
The wind drag coefficient is as low as 0.17.
These eco modder methods and cars lead the way of what is being done in North America among educated hobbyists to cut down fuel emissions, save money, and energy by doing more with less.