It's not just taking the bus, though.
High fuel prices cause people to think about biking, use more fuel-efficient vehicles, and drive more economically.
Since we passed the psychological $2 barrier I am now driving the limit instead of 10k over. Uses less fuel. And without the carbon tax we wouldn't be over $2, so it's absolutely contributing to a reduction in my fuel consumption.
Nobody is going to ditch a car that's paid off and take on payments on something a little more fuel efficient. Even with the prices the way they are, and the fact my car requires premium, payments on an electric car are still considerably higher. I'll just suck it up I guess as I am one of the few at work who can't 'work from home'