There was a survey carried out by Heidelberg University, Germany, (in
the 1980's or early '90's) which compared the pollution created by the
complete process of automobile manufacturing versus the pullution
caused by driving the cars. It was mentioned in the Sydney Morning
Herald at the time. Can you find the study or if there have been any
other similar studies?

Hello,

   Here is a link which appears to include results from the study you've cited:

http://afo.sandelman.ca/cc1.html

   Here's another page which presents similar data, but in pie-chart form:

http://www.ilea.org/lcas/macleanlave1998.html