Haha, I definitely have been guilty of all of those in the past, most recently the "Gas pump giggle".
You might be an ecomodder if:
- you think of gravity as a means of motor assist
- you take your shoes off whenever you drive your car
- you have ever slapped your passenger's hand away from the A/C button
- your mechanic has ever asked you how you stop your car when he checks your brake pads
- your monthly gas budget is less then your monthy phone/internet bill