Willie Stroup owns this 2014 Peterbilt 389 flat top powered by a 550-horsepower 6NZ Cat with a 13-speed and 3:36 rears. Perry Walton drives the truck for Time Dedicated Carriers out of Rockport ...

Peterbilt's new Model 589 maintains practically all the design features found in its predecessor, the Model 389. Blink and you'll miss it. If you squint pretty hard, you might still miss it.