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Are 2 billion cars a nightmare we can avoid?

Miami Herald, 30 March 2009

According to Daniel Sperling and Deborah Gordon in their provocative new book, "Two Billion Cars: Driving Toward Sustainability" (Oxford University Press, $24.95), the 1.5 billion (including motorcycles and scooters) vehicles we will have by 2010 are "pumping extraordinary quantities of greenhouse gases into the atmosphere, draining the world's conventional petroleum supplies, inciting political skirmishes over oil and overw