prompt: What is the most fuel efficient car?
chosen: What is the most fuel efficient car?
chosen: user
chosen: The Toyota Prius is the most fuel-efficient car available in the U.S., with an EPA estimated combined fuel efficiency of 52 mpg. Other highly fuel-efficient cars include the Hyundai Ioniq, Kia Niro, Honda Civic, and Volkswagen Golf.
chosen: assistant
rejected: What is the most fuel efficient car?
rejected: user
rejected: assistant