How many letters does the top answer for “someone who drives (or travels in) an automobile” have?

The most common answer is automobilist (12 letters).

Crossword clue: someone who drives (or travels in) an automobile

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

automobilist 12 letters wn-def

someone who drives (or travels in) an automobile

motorist 8 letters wn-def

someone who drives (or travels in) an automobile