Given the stream of consciousness rationale, provide a reasonable question and answer. Rationale: Autopilot is used in vehicles. Vehicles are powered by engines. Engines rely on fossil fuels to operate.
 The question and answer:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Does autopilot rely on fossil fuels?
The answer is yes