The research being done at the Hagerstown plant, where Greszler and Charest are based, is so important that the U.S. Air Force has awarded Mack six contracts, plus one now pending, a Volvo spokesman said.
In all, the military is paying Mack $16.7 million to develop the hybrid technology and deliver seven prototype vehicles, spokesman James A. McNamara said.
In addition to the handful of employees doing such work here, there are Volvo teams in Sweden and France, and at Nissan Diesel, which is part of Volvo, in Japan. In Sweden, where Volvo is headquartered, the U.S. and Swedish governments are helping pay for research on hybrid technology for long-haul trucks.
Thus far, Mack has built three hybrid test trucks that are dump trucks and two that are refuse trucks. Two of the dump trucks are at Air Force bases in Nevada and Hawaii, and one is being tested at Aberdeen Proving Ground in Maryland.