GOLDEN, Col. --- The National Renewable Energy Laboratory (NREL)is now evaluating the performance of 50 hybrid diesel step vans that the United Parcel Service is using on the job. The laboratory's fleet test and evaluation team will perform a 12-month study of some of these vans and publish the findings in the fall of 2008, the Environment News Service reported. The vans are based at UPS locations in Dallas and Phoenix. "By capturing and publishing vehicle performance data, NREL can help UPS make this type of energy-saving system a standard in the industry," said Robert Hall, UPS director of maintenance and engineering. Eaton Corp. provided the hybrid propulsion systems. Some of the vehicles were manufactured by Workhorse Custom Chassis, while others were made by Freightliner Corp. The test project received funding from the Department of Energy's Advanced Vehicle Testing Activity program.

Originally posted on Fleet Financials