the world > physical sensation > hearing and noise > degree, kind, or quality of sound > engine sound > [verb (intransitive)]
society > travel > transport > transport or conveyance in a vehicle > movement of vehicles > move or go along [verb (intransitive)] > move with specific sound
1907 13 June 4/4 A big motor-car tooting and chug-chugging.
1928 11 Aug. 3/1 We chug-chugged comfortably down Southampton Water.