“To the extent that developing countries aspire to reach motorization levels comparable to those in developed countries, the number of vehicles will likely continue to climb rapidly. We in the developed countries cannot successfully argue that the mobility afforded to us by personal vehicles is something to be curtailed in the developing countries for the benefit of us all. As a consequence, the required raw materials and energy will challenge our resources, and the resulting vehicle emissions will strain our ecological systems.”

Michael Sivak, former director of Sustainable Worldwide Transportation at the University of Michigan (6/12)