Hybrid Bus (IMAGE) DOE/Oak Ridge National Laboratory Caption Fisher Coachworks' lightweight hybrid bus, which achieves twice the fuel economy of current hybrid buses, has some Oak Ridge National Laboratory roots. Credit Fisher Coachworks Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.