[Daox]

Cause you asked... There are actually quite a few. There are some really amazing projects in these threads:.

Paul & Sabrina's cheap DIY 144v motor controller - 1,595,732 views

5th generation civic hatchback - improving aerodynamics - 662,768 views

Interesting Aerodynamic Cars (Mike Vetter's ETV, also Avion) - 568,007 views

Electric car conversion: Project ForkenSwift - 509,804 views

Aerocivic - how to drop your Cd from 0.31 to 0.17 - 493,065 views

Paul and Sabrina's Cheap 3 Phase Inverter (AC Controller) with Field Oriented Control

Ben Nelson's Electro-Metro Build thread

Commercially produced aerodynamic pickup bed cap

NGK Platinum vs NGK Iridium? Worth it?

DIY Solutions to Honda Hybrid Battery Problems (Insight, Civic, IMA)

MPGuino release one workspace

You know you're an ecomodder if...

OBD MPGuino gauge

Elio Motors, The Next Big Thing?!!...

Project: Geo Metro boat tail prototype - 15% MPG improvement @ 90 kph / 56 mph

Project Extended Pop-Top Aerodynamic Camper Shell ('99 Tacoma)

Notable eco-cars (old & new) spotted in the wild: post your pics!

<$1k DIY Neighborhood Electric Motorcycle

Glossary Take II

Top 5 most fuel efficient tires (Lowest Rolling resistance: LRR)

The BSFC chart thread (post 'em if you got 'em)

Reviving a 2000 Honda Insight "beater"

List of common mechanical problems that hurt fuel economy

Project: The Anal Probe

Honda IACV explained - 179,362 views


And I'll just stop after 25. There are actually 65 threads with more than 100k views.