Originally Posted by
wiggin
The problem of high gasoline prices has very little to do with the price people pay at the pump. As a proportion of their income, fuel costs tend to be very small (I think my wife and I spend about 1-1.5% of our gross income on gas); outside of very long commutes or very small salaries, a 30% jump in gasoline (more than regular seasonal variation, which is on that order anyways) simply doesn't significantly register on most budgets. Most people spend a far larger proportion of their income on utilities, food, and housing, not to mention entertainment. I'm sure there would be a mild affect on demand from increased gas prices, and some substitution effects, but that's honestly not where the economic damage is.
The problem is that transportation in the US is expensive and generally based on gasoline, which means that most goods will also increase in price. A huge proportion of the transportation cost of a good is involved in the last bit over land in the US (as opposed to sea shipping and the like). Substitution with other land transport methods will help, but at the end of the day people will be buying less stuff since prices will rise. This is bad.
That being said, the good thing is that while consumer demand for gasoline is relatively inelastic given the realities of American city design, overall national demand for gasoline shows some elasticity, albeit with a time delay. If higher gasoline prices were phased in over the course of years, it's likely that alternative, more efficient, shipping methods would gain precedence and investment. It's also possible that it will affect consumer demand for gas since there can be some economizing on the scale of years (people buy more efficient cars, move closer to work/public transit, etc.). That being said, since it's such a small portion of most budgets I doubt it would have a big effect.