July 30, 2004 [SolarAccess.com] A new, company-manufactured fuel cell stack in the second-generation 2005 Honda FCX was certified as a low-emissions vehicle by both the United States Environmental Protection Agency (EPA) and the California Air Resources Board (CARB), and approved for commercial use. Performance in the 86 kW fuel cell has increased by 20 percent over the 2004 model, according to the company. The 2005 model has increased driving range and system performance, and improvements have reduced the cost and complexity of the fuel cell system. It also allows the vehicle to start and operate in below- freezing temperatures, negative four degrees Fahrenheit, which until now has been a major hurdle to the marketability of fuel cell vehicle technology. Stamped metal separators and aromatic membrane material were used to produce a fuel cell stack with 50 percent fewer components.