A performance evaluation of Class 8 hybrid electric tractor trailers compared with similar conventional vehicles by the U.S. Department of Energy's (DOE's) National Renewable Energy Laboratory (NREL) shows significant improvements in fuel economy.

For the "Coca-Cola Refreshments Class 8 Diesel Electric Hybrid Tractor Evaluation: 13-Month Final Report," the NREL team collected and analyzed fuel economy, maintenance, and other vehicle performance data on five hybrid and five conventional Class...
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