UPS Takes the Lead on Hydraulic Hybrids

The delivery company will deploy seven trucks with a technology to challenge the electric hybridand may point the way for more green vehicles
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Next year, the United Parcel Service (UPS) will deploy on U.S. streets a new model of its signature boxy brown truck. At first glance, it'll look no different than any of the company's 93,000 other delivery trucks. Inside the hulking chassis, however, will sit a hybrid technology that uses a hydraulic system in concert with a diesel engine to power the vehicle. The Environmental Protection Agency has received numerous patents on the system since 2000.

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