2021 Peterbilt 579 Ultraloft, 455hp Paccar MX-13, Paccar 12spd automated transmission, 12.5k front axle, 40k rears on Peterbilt Flex Air suspension, 2.79 gear ratio, 238'' wheelbase, 240gal fuel capacity, hood mirrors, sun visor, Bendix Wingman Fusion, Arctic Fox fuel heaters, block heater, Premier interior package, 80'' sleeper with double bunks, Thermoking Tripac APU, SmartNav, refrigerator, power windows/locks/heated mirrors