Peterbilt 579 semi-truck features an Ultraloft sleeper with a double bunk, plus 500,460 miles on its Paccar MX-13 turbodiesel ...

Moving up in the PACCAR line takes us to the MX-11, which is used in Peterbilt model 567 and 579 trucks. This 10.8-liter engine can put out as much as 430 horsepower and 1,650 pound-feet of torque.

Vito Mangiaracina drives this 2017 Peterbilt 389 for R.J. Ferrari out of Vineland, New Jersey. The company grows and ships ...