It can be called anything in an airplane because there the pilot has some level of training with the system and understands its limits. You don't get a pilot hopping on a 767 and flying a bunch of people around solely because Boeing used autopilot in a deceptive marketing ad, then getting the surprise of a lifetime when the autopilot doesn't avoid flying into a mountain.

A car is another thing entirely because the general population's definition of "autopilot" does come into play and sometimes without proper training or education. I can just go rent a tesla right now.