Luke Rethwisch, son of longtime truck builder Bill Rethwisch, is starting to make a name for himself early after being crowned the MATS Big Rig Build-Off champion.

Peterbilt is now offering the Paccar TX-12 Pro automated transmission with the Paccar MX-13 engine in the Models 579, 567 and 589. The company says the combo offers optimized performance for both on- ...