> There is this curious, and somewhat crazy, notion that Europeans live all stacked up on each other in some imagined urban paradise (or hell, depending on who you ask), and Americans live in some sparsely-populated wilderness. Neither impression are [sic] true.
OK, let's get more specific. Here are some of the larger metro areas (bulk of the population, right?) for the US and for Europe:
New York metro area[1]: 720/km2
Chicago metro area[2]: 509/km2
Miami metro area[3]: 315/km2
Houston metro area[4]: 215/km2
Paris metro area[5]: 21,196/km2
London metro area[6]: 5,206/km2
Madrid metro area[7]: 1,267/km2
Instanbul metro area[8]: 2,593/km2
Or compare every urban area on the list in the UK[9] all of which have more than 2000 people per km2 and the list of the largest urban areas in Europe[10], again with 80% > 2000/km2--the top 10 > 5000/km2, with the largest urban areas in the US[11] where less than 5 have 2000+, and 95% have < 1500 people per km2.
America may not have invented the suburbs, but we do them like nobody else because we have tons of space. I live in Austin, TX. I can get on the road and be in the countryside in under 30 minutes--real countryside with no buildings in sight. Can you even do that in the UK? France? I have family in St. Louis. If I drive there from Austin, that's 1300km. Largeish cities I would hit are Dallas and Springfield, MO. I could go from Rotterdam to Andorra with the same distance and pass through Antwerp, Paris, Orleans, Toulouse, etc.
Even if we assumed the average American city is as dense as those in Europe (they aren't) we still have the fact that in most parts of America you have long stretches of empty freeway between major metro areas. Austin TX to Houston, for example, is a 260km (160mi). Atlanta, GA to anywhere of note is at least 160km(100mi). Even California: San Diago to LA, 160km(100mi); Sacramento to San Fransisco: 140km(90mi); San Fransisco to LA: almost 600 km. That's almost the same as London to Glasgow, and you traverse most of the UK. Further than Paris to Bordeaux, again you cross most of France.
[1]: http://en.wikipedia.org/wiki/New_York_metropolitan_area
[2]: http://en.wikipedia.org/wiki/Chicago_metropolitan_area
[3]: http://en.wikipedia.org/wiki/Miami_metropolitan_area
[4]: http://en.wikipedia.org/wiki/Greater_Houston
[5]: http://en.wikipedia.org/wiki/Paris
[6]: http://en.wikipedia.org/wiki/London_commuter_belt
[7]: http://en.wikipedia.org/wiki/Madrid#Metropolitan_area
[8]: http://en.wikipedia.org/wiki/Istanbul
[9]: http://en.wikipedia.org/wiki/List_of_urban_areas_in_the_Unit...
[10]: http://en.wikipedia.org/wiki/Largest_urban_areas_of_the_Euro...
[11]: http://en.wikipedia.org/wiki/List_of_United_States_urban_are...