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.

Question: What is one of the motorsport events that he participated in?
Self-contained rewrite: What is one of the motorsport events that Moss participated in after his return to racing?