"The EPA's mandate to develop new regulations comes...
...from the Bush administration after the U.S. Supreme Court decided in April that it was the agency's job to regulate carbon dioxide."
"The lab's next major effort is to help develop a fleet of UPS hydraulic hybrid delivery trucks that can recover and reuse energy generated by braking, allowing for a 70 percent increase - up to 18 mpg - in fuel economy.
Eventually, Grundler said, the technology can save even more fuel by incorporating it in passenger vehicles.
"We feel very good that the work we do here ... provides enormous benefits to society," he said. "
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