The Collaborative International Dictionary of English v.0.48:
Automobilism \Au`to*mo"bil*ism\, n. The use of automobiles, or the practices, methods, or the like, of those who use them. -- Au`to*mo*bil"ist, n. [Webster 1913 Suppl.]WordNet (r) 3.0 (2006):
automobilist n 1: someone who drives (or travels in) an automobile [syn: motorist, automobilist]