Such well-known companies as DaimlerChrysler, Ford Motor Company, General Motors, Honda, Toyota, Blue Bird, and Freightliner ... In addition, heavy-duty natural gas engines are now available from Caterpillar, Cummins, Detroit Diesel, John Deere and Mack. ... When compared to average petroleum vehicles, NGVs reduce exhaust emissions of carbon monoxide (CO) by 50%, ... The recently announced EPA heavy-duty emission standards will not be fully implemented until 2010.
|Title||:||National energy issues|
|Author||:||United States. Congress. Senate. Committee on Energy and Natural Resources|