I think comparing USA to many other countries isn't very fair. USA is much more spread out and, atleast in my area, public transportation is non-existant. Major cities are different, but more rural areas is what im talking about.
Around here, either you need a car or find someone else to drive you around everywhere (lol, yeah right). There is no bus, subway, train, etc, and biking/walking is impossible since I cant do such up to 50 miles a day..
So, for example, it might suck for my friend in Spain where its much more expensive to fill the tank, but she can walk to school/work/mall/market. Remove those from your driving and imagine how much less you'd be driving...
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