I read some time back that due to a shortage of ethanol there was a temporary halt to requiring it. The reason I'm mentioning it is because my mileage has been nothing short of spectacular even with AC. I try not to pass drivers who appear to be trying to conserve fuel but yesterday I was in back of one who kept varying his speed up and down as much as 10 mph, never going above the speed limit. Finally, after readjusting my cruise control for the millionth time, the road opened up to two lanes and the right most lane was supposed to be for slower traffic. So I tried to pass him going up hill and he stomped on it. It was steep and I had it floored. As we neared the top of the hill the two lanes were about to merge again so I had to get some additional boost so I shut off the AC. I managed to get past him going 90. Then to make things worst he was on my tail for miles and miles. I've seen people speed up when they see they are about to be passed by my Prius but this guy was just out of control. At some point he disappeared into a gas station. No surprise.
I wasn't following him closely before this happened. I kept a good distance away.
mark_