From the article:
Anyone who legally drove a vehicle fitted with a Gas Producer in wartime Australia would now be in their eighties. There will not be all that many around with first hand knowledge of the use of these units. The purpose of this talk is to encourage discussion on this fascinating aspect of our notso-distant past, in an effort to retain some of the anecdotal byways before the links with personal experience are lost.
This is not intended to be a dissertation on the theory of gas utilization in motor vehicles. There are many conflicting statements in the full chronology and it is not possible to explore or even to highlight them all in a talk of 45 minutes. Generalizations have been made in order to avoid unnecessary technical comparisons. However, every attempt has been made to present a balanced picture with the intent of promoting further discussion, revision and hopefully the inclusion of new material.