Mack Defense, based in Allentown, will highlight its line haul hybrid tractor prototype during an Army exposition in Washington this October.
The company said it was awarded a contract to design, build and deliver prototype vehicles and will show off the results as part of the U.S. Army’s Common Tactical Truck (CTT) program at the Association of the 2026 United States Army (AUSA) Annual Meeting and Exposition, Oct. 12-14. After testing and evaluation, the trucks have met the final requirements of the Army’s next generation of heavy tactical trucks. Those trucks will support the modernization and planned replacement of about 35,000 Army vehicles used for combat logistics, support and service-support missions, officials said.
“Our team used its experience in designing and integrating advanced vehicle technologies to build these next-generation trucks,” David Hartzell, president of Mack Defense, said. “These upgrades will help provide the Army with safe, innovative, cost-effective, fuel-efficient and next generation tactical vehicles.”
The Army’s CTT program will incorporate advanced safety technologies, enhance cybersecurity, open systems architecture, and greater fuel efficiency into a modern, scalable commercial-based platform to support long-term sustainability.
All three Mack Defense CTT prototypes, including the line haul tractor, incorporate high-voltage hybrid-electric systems, officials said. These systems reduce fuel demand, enable extended anti-idle/silent-watch operation and provide exportable power. Those capabilities are critical for contested logistics environments where refueling may be limited and soldiers may have to rely on onboard electronics, and communications, officials said.