Conversation so far:
When did Stirling Moss leave racing?
Although ostensibly retired from racing since 1962, Moss did make a number of one-off appearances in professional motorsport events in the following two decades.
When did Moss return to racing?
Moss competed in the 1974 London-Sahara-Munich World Cup Rally in a Mercedes-Benz, but retired from the event in the Algerian Sahara.
What is one of the motorsport events that Moss participated in after his return to racing?
In 1980 he made a comeback to regular competition, in the British Saloon Car Championship with the works-backed GTi Engineering Audi team.

Question: What kind of cars was he driving during this time period?
Self-contained rewrite: What kind of cars was Moss driving during his return to racing time period?