Without a doubt Emersonbiggins, for the poor, every increase in gas reduces their driving. For the wealthy, oil price will have no impact on driving.
Now, for the rest of us in the middle, as gas increases to $5.00/ gallon, then to $10.00/ gallon, I believe North Americans can mostly switch to more fuel efficient personal transport or take other measures to reduce the personal impact of higher gasoline prices. We can, over time, trade in our obnoxious trucks, SUV's, or minivans for one of the many more fuel-efficient cars available and still continue fairly 'normal' driving patterns.
For example, I now generally use my bicycle or the 90 mpg scooter for all local errands. But I still have a 40+ mpg Civic for carrying the family or when it rains too hard. (dang it, I just spilled a spoonful of milk and cereal on my keyboard...) This will carry us through the coming $10.00/ gallon gas without altering our driving patterns. Now $20.00/ gallon gas might be another matter entirely... we'll probably rely more on the bicycles when that time comes.
Well, one thing is 100% certain: we'll all find out soon enough.
