I agree. Mythbusters seem to think through all their tests pretty good and try their best at it, but sometimes it is hard to compensate for little variables.

No two vehicles even the same model with the same motor/trans/gearing and options etc, are exactly alike, and no two drivers drive exactly the same. There are too many other variables to list. It is really hard unless you have a real controlled experiment running on a dyno.

What about with regards to an incline? I'd think that using A/C would not only risk overheating the engines (in high temperatures) but also produce strain on the engine and thus would require more power which equals more gas.
In that case, would windows down be better?

don't know about some vehicles, but driving through CA when it's 115 degrees with the AC on up a hill still net me 32mpg. The AC pulley didn't seem to care, and I didn't ever come close to overheating. Unrelatedly, I will change the alternator pulley before winter, it was whining loudly when cold last year.

yea me too, most of their non vehicle tests seem pretty logical but when it comes to cars theres alot of variables they missed...Its not really their fault the producers tell em what to do...

i know you can post up ideas on their site, might give it a shot, maybe suggest a MPG special edition or something.

Nope. Just me. And the po' folks. Of course, it was 112 degrees today, and right now, at 9:30 at night, it's 92 degrees. And out here, everyone's still going 80. Actually had to dive onto the shoulder of the 14 Freeway just south of Rosamond today to get out of the way of some one, probably from the local Air Force Base, driving a bright yellow Ford Focus at 80+ and lane splitting...

Looks like a concept car remake of an old concept car...1938 Buick "Y Job"...with a '39 grille grafted on...

https://www.prewarbuick.com/img/cars/...b-blueback.jpg

Wait another 20 years, GM (by then likely owned by Dharmsala Jitney ltd., Mumbai) will come out with a concept car based on the 1971 Vega.... with a 1978 Chevette grille...

There's a reason that it looks like a 39 grille - because it is. The 39 grille was the inspiration for the car, and design cues were taken from the Buicks of the 30's & 40's.

Well, I don't drive enough to notice, but when I leave my Wal-Mart, I've noticed fewer SUV and trucks in the parking lot.

The parking lot is empty in the morning, customers seem to be buying more in bulk, and I don't hear the humm of idling engines as much any more. Even with the change in shopping behavior, sales seem to be about the same in general from last year.

i still find a buttload of stupid soccer moms in minivans driving like the dumbaholes they are...