The 119 hydrogen-powered Chevrolet Equinox Fuel Cell vehicles in GM's Project Driveway program have driven more than 3 million miles since 2007, avoiding the consumption of 157,894 gallons of gasoline.

More than 5,000 drivers have provided feedback on their experiences with the fuel cell vehicles over the last seven years, according to GM.

"These vehicles have operated through seven full winters and a wide range of environmental conditions, proving that fuel cells can meet the demands of real-world drivers," said Charlie Freese, executive director of GM's global fuel cell engineering activities, in a recent statement.

Last year, GM announced two fuel cell-related collaborations. In July, 2013, GM and Honda announced a long-term collaboration to co-develop next-generation fuel cell and hydrogen storage systems, aiming for potential commercialization in the 2020 time frame. In addition, GM and Honda are working together with stakeholders to further advance refueling infrastructure, which is critical for the long-term viability and consumer acceptance of fuel cell vehicles.

Also last year GM opened a new state-of-the-art Fuel Cell Development Laboratory at GM Powertrain World Headquarters in Pontiac, Mich. In September, 2013 GM and the U.S. Army Tank Automotive Research, Development and Engineering Center (TARDEC) jointly announced an expansion of their relationship for testing automotive fuel cell technology.