What is another word for auxiliary racer?
Pronunciation: [ɔːksˈɪli͡əɹɪ ɹˈe͡ɪsə] (IPA) 
Auxiliary racer refers to a secondary or supporting vehicle used in racing or motor sports events. Synonyms commonly used to refer to an auxiliary racer include support vehicle, chase car, pace car, backup car, and pit vehicle. These terms describe the function and purpose of the vehicle in relation to the primary race car or the entire racing event. A support vehicle is used to provide assistance to the race car, while a chase car can be used to follow and monitor the progress of the race. The pace car sets the speed for the race while a backup or pit vehicle is used to transport equipment and personnel around the track.
