And that could be in the process of happening. When Americans spend less time on the road, the frequency of auto accidents declines. And when auto accidents go down, so do claims on auto insurance. That gets the ball rolling: When auto insurance companies see their costs on claims declining steadily, they typically respond to market conditions by lowering their auto insurance quotes and, ultimately auto insurance rates in a bid to stay competitive. And voila!, we write smaller checks for our auto insurance premiums.

With run-away gas prices, Americans are already driving less. The Federal Highway Administration (FHWA) reported in May 2008 that Americans are driving at “historic lows.” The estimated “vehicle miles traveled,” or VMT, for March 2008 fell 4.3 percent compared to March 2007, making it the sharpest dip for any month since the FHWA began tracking traffic-volume trends in 1942. Want to follow driving trends? The FHWA publishes monthly “Traffic Volume Trends.”