Mack Displays Heavy-Duty Hybrid Electric Vehicle on Capitol Hill ... The powertrain is mounted in an Air Force R-11 6,000 gallon capacity refueler truck built on a Mack RD 6x4 chassis.

Mack Trucks is marking its 125th anniversary in 2025 ... The company says it now sells and services its trucks in more than 45 countries, while assembling its heavy-duty vehicles at the Lehigh Valley ...