Step 1: Understanding the Concept:
This question points to a specific, somewhat contradictory, admission made by the narrator in 'The Pace for Living'.
Step 2: Detailed Explanation:
Although the narrator generally dislikes speed and the fast pace of modern life, he admits to one exception.
He states that he enjoys the thrill of speed when he is a passenger in a fast car, as long as he is not the one driving.
He specifies the vehicle as a car, mentioning the pleasure of going at "ninety miles an hour" in it. This allows him to experience the excitement without the mental stress of controlling the machine.
Step 3: Final Answer:
The author enjoys travelling fast in a car if it is not his own.