Gristmill note that the most recent American government figures on driving show a substantial drop: a 4.7% reduction in mileage, motivated by the increase in oil prices (154Kb pdf).A 4.7% drop amounts to a staggering 12.2 billion miles. In other words, one year's reduction in U.S. driving is equivalent to 489,940 fewer car trips around the world, a standard unit of mega-distance.
Looking at the bigger picture, the total American mileage over the last year is 2,954,326,000,000 miles, roughly. That's a little more than half a light year, the next largest such unit. Now, the nearest star system to our own is, as everyone knows, Alpha Centauri, which is 4.37 light years away.
Over George Bush's term of office, therefore, Americans will have collectively driven as far as Alpha Centauri, more than 25 trillion miles, and all at about 24.6 miles per gallon. Other sci-fi dorks may find this as shocking as I do.
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