You know you're an ecomodder if/when...

[SuperTrooper]

As soon as you've safely merged onto the interstate you start scanning for large trucks to draft. (At a safe distance, of course.)

[wagonman76]

You used to love the freeway, but now prefer the side roads because of higher speeds and higher winds on the freeway.

[IBrakeForNobody]

...you very very reluctantly turn on the A/C for a mile in town and a mile on the freeway, and use the cruise control for a mile on the freeway just to verify that it works on your new car, and as soon as that mile is up, you say, "DONE!" and shut it off.

...you're happy when you follow behind an F250 and see the instant MPG on the SG go up, then another 3/4 ton pickup pulls behind and it goes up more.

[groar]

...you get horned in an exit lane by a grand'pa driving a brand new prius behind you.

Story : in an exit lane I was keeping a constant speed while people in front of me were doing stop and start. Of course some people used the fluctuating interval in front of me to insert themselves into the exit lane.
At each car going into the exit lane in front of me, the grand'pa was horning and gesticulating. After 3 horns, I took as a point of honor to keep a constant speed as much as possible

Another time in a traffic jam I was also keeping a constant speed while cars in front of me were doing stop and start. This time a grand'ma was behind me but I quickly saw she was unable to keep my constant speed so she was doing stop and start and she was breaking only to avoid me... Then I started to do stop and start as people in front of me and the grand'ma stayed at a safe distance behind me.

Denis.

[wagonman76]

You see the solid looking wheel rims on heavy equipment and the first thing that comes to mind is "oooh, smooth wheel covers".

[3dplane]

Originally Posted by wagonman76

Youd rather drive at night because the reduced visibility gives you an excuse to go slower.

Or.... You rather not drive at night because you can't stand thinking about the drag the alternator puts on your engine due to the headlights being on.

Spinoff......An oncoming state trooper flashes his high beams at you at dusk to let you know it's time to turn the headlights on (happened).

.....You're calculating when your wife is going to start talking to you again after she discovers that you unscrewed her FM antenna and removed her roof rack cross members (that she uses sometimes).

.....Your coworker sees you pulling in to the parking lot when he stops walking and puts his hand up to his ear to find out if your engine is running or not.

.....Your coworkers expect you to report on your latest tank MPG.

Barna

[americasfuture2k]

you chuckle a little when you see full size trucks and SUVs go flying past you well over the speedlimit while your doing 55

[order99]

When gas falls below $2 and you're STILL driving like a little old lady and avoiding Interstates...because you CAN.

When Duct Tape has become the new 'chrome'...

When the Ford dealer doesn't drool upon seeing your '93 Festiva (complete with Full-Primer paint job and duct-taped rims) pull into the lot next to the new '09's-because he knows you only stopped by to grab some more primer and research possible Aeromods ...

When the local Cops stop you for going 15 MPH and slowing traffic to a crawl-and turn red with embarrassment when you helpfully point out that the Speed Limit on this street is 20 MPH, and that everyone else (including the Cops!!) routinely pull 35! Just bein' law-abiding, Sirs...

[99metro]

You have "60+ MPG" printed on your rear window of your Metro and all you want to do is slowly cruise to new car lot during the GM, Ford, Chrysler Going-out-of-business-sale...

[Tango Charlie]

...if you know from memory the Cd of at least several production vehicles.