9.6 billion -- US citizens drove 9.6 billion fewer miles in May 2008 than in May 2007, or 3.7% less. Yet May usually means an increase in traffic because of Memorial Day vacations and the beginning of summer.
1,188.5 billion -- This is the cumulative number of 'vehicle miles traveled' so far in 2008. Compared to the same months last year, that's a drop of 2.4%. That might seem like a small drop, but if you look at the graph on the left, you'll see that the number of miles traveled usually goes up. This year it didn't just stop growing, it actually went down. This shows that fuel costs do have a big impact and that fossil fuel consumption isn't as 'inelastic' as some thought. Source: GCC