One would expect auto-insurance companies to see a windfall from spikes in gasoline prices, as higher costs should cause a decrease in miles driven, leading to fewer personal injury and physical damage claims. But as Temple Fox School of Business Professor Michael R. Powers writes, a 10 percent increase in the price of gas leads to less than a 1 percent decrease in the amount of gas consumed. "Regardless of its causes, the decrease in price elasticity offers one simple warning for auto insurers and their investors in the coming years: higher gas prices are no longer the dependable boon they once were."