Matters of Scale: Greenhouse Car-Nations

Greenhouse Car-Nations

World total of motor vehicles, 2004
826 million

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Total length of road network, United States, kilometers (rank = 1)
6.4 million

India (2)
3.3 million

Congo (30)
157 thousand

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Number of vehicles per kilometer of road, Hong Kong (1)
28


Qatar (2)
284

United States and El Salvador (tied for 40)
36

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Number of vehicles per square kilometer of populated land, Japan (1)
197

Belgium (2)
173

United States (14)
65

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Number of cars per 1,000 people, Lebanon (1)
732

New Zealand (2)
613

United States (14)
481

India (153)
6

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Emissions of CO2 from petroleum consumption, metric tons, United States (1)
2,595 million

China (2)
816 million

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SOURCES: Vehicle total: Worldwatch Institute, Vital Signs 2006–2007. Emissions: U.S. Energy Information Administration. All other data: The Economist, Pocket World in Figures.

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Published in World Watch Magazine, May/June 2007, Volume 20, No. 3