Lethargy
I bought a '94 Lexus and suddenly notice all the other Lexi, a tribe that drives as slowly as possible as far left as possible. But find the Over-Drive button, switch it off, and oh, there's the V8. I get half the rated mileage in every car I own.
Recently having become the proud owner of a shiny, old '94 Lexus, I've become increasingly aware of other Lexi (Lexuses?). And as a group, the drivers of Lexi can best be described as lethargic. They're everywhere and they tend to want to travel as slowly as possible as far left as possible.
On a related topic, this LS400 sports a 4L V8. However, on the drive home from Birmingham I was a bit underwhelmed by its ability to accelerate. Just this evening, however, I found the Over-Drive button, turned it off, and Oh-My-There's-The-V8 struck me.

Through practice and dedication I've managed to achieve fully half the rated gas mileage in every car I've owned. And that's not a feat to scoff at. Every opportunity to accelerate must be approached with nothing less than what could accurately be described as zeal or innate resolve. So while I may suffer gas mileage comparable only to a Murcielago, my sixty-miles-a-week average driving distance probably means I spend less on gas than you do.*

* With the exception of Dennnis, who drives a little scooter.