autopilot

/AO1 T OW0 P AY0 L AH0 T/
noun
  1. 1

    A mechanical, electrical, or hydraulic system used to guide a vehicle without assistance from a human being.

    โ€œI set the autopilot to due south, so I could get some rest.โ€

  2. 2

    (by extension) A state of mind where one no longer thinks about doing one's actions, but acts mechanically

    โ€œI've been doing this 12 hours non-stop, and am so hungry and tired that I've stopped thinking: I'm now on autopilot.โ€

verb
  1. 1

    (of a vehicle) To pilot itself; to drive or travel automatically.

Source: https://en.wiktionary.org/wiki/autopilot