August 29, 1921. Decided to have the car attended to. We took the car in at about nine o'clock and never had it fixed until about four-thirty. We started for King City, only 48 miles away. We thought we heard a knock in the engine and decided to return to the garage in Salinas. On the way back, we did not hear any knock at all. We slept again at the campground in Salinas.