What you might unthinkingly be on

I believe the answer is:

auto

(Other definitions for auto that I've seen before include "Car (American)" , "American vehicle" , "Lincoln?" , "Car (mostly US)" , "Prefix denoting by or of the same person or thing" .)

I've seen this clue in The New York Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.