AI is a setting where you can tell AI Power to drive a vehicle for you.
Recently, the game got updated to 0.12, so everything has been updated, including the AI.
Enabling AI Power
Simply go to the main menu and go where it says AI.
AI Modes (Upgraded)
Stop: The AI is disabled until you tell it to flee or chase you.
Flee!: The AI will try to flee from you.
Chase me!: The AI will try to chase you until your engine explodes.
Random: The AI will go in a random direction.
Arrow: Go back 1 level.