Why am I enraging the other drivers who want to drive 80-plus? Money. With gas prices going up to (inflation-adjusted, even) all-time highs, I'm experimenting with slowing down a bit to see if it makes a difference. (Yes, I know that even at USD3/gallon, gasoline is absurdly cheap compared to Europe.) Initial results are promising: I got an 11% increase in fuel economy immediately. My minivan will never be a high-mileage vehicle, but an 11% savings seems good to me.
Still, much of the time I'm surrounded by people for whom even 65 is too slow and who pass me like maniacs. Every now and then, I see them crash into each other, too. (I'm not joking; I've seen several accidents happen close to or nearly right in front of me during my commute. Bay Area residents: if you ever hear KCBS credit "Kevin of the Phone Force" during a commute-hour traffic report affecting the Fremont-to-San Mateo-via-Dumbarton drive, it's probably me.)