500hp Cummins X15 with a 12 Speed Automatic Transmission! 2022 Peterbilt 579 Ultraloft with a Spacious 80in Double Bunk Sleeper; Rear Bunk Controls; Air Slide 5th Wheel; Front Disc Brakes; Refrigerator and more! Vehicle specifications; options; mileage; and availability are subject to change. While every effort is made to ensure accuracy all information should be verified with a sales professional prior to purchase.