1. "Climate Change 2001: Mitigation" United Nations Intergovernmental Panel on Climate change, working group III, Norway (2001). Note that this is for all motor vehicles, including motorcycles, (which have reached plague like proportions in parts of Asia). The "passenger vehicle" population according to Wards Motor Vehicles facts and figures 2003 was 562 million in 2001.

2. "World report on road traffic injury prevention", World Health Organisation, Geneva, (2004)

3. World Resources Institute, Washington (2004). 60% of this figure comes from personal motor vehicles. Also bare in mind that this is the global average, with only one car for every 10 people. In many car obsessed western countries the proportion is much higher.

4. "Dirty from cradle to the grave", Umweltund Prognose-Institut Heidelberg, (1993). Also contains good information about other environmental and social consequences of cars. For further reading on life cycle waste issues see the Environmental Defense Network page.

5. American Geophysical Union EOS Transactions, volume 85, number 24, pp. 233-234.