General Motors and the U.S. Army Tank Automotive Research, Development and Engineering Center have come up with what they call the “most extreme off-road-capable” midsize pickup.

The most impressive feature about the new Colorado ZH2, announced Monday, is that it runs off clean energy, even with its reinforced interior and exterior, imposing 6 1/2-foot height and camouflage coloring.

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The heavy-duty pickup uses hydrogen fuel cells and a motor that converts hydrogen gas into electricity, leaving only water and heat as a byproduct.

The entire project, from start to finish, took less than a year.

“The speed with which innovative ideas can be demonstrated and assessed is why relationships with industry are so important to the Army,” said Paul Rogers, director of the U.S. Army’s tank research center, in a prepared statement. “Fuel cells have the potential to expand the capabilities of Army vehicles significantly through quiet operation, exportable power and solid torque performance, all advances that drove us to investigate this technology further.”

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In 2017, the vehicle will undergo Army field testing to determine its viability in military operations. In particular, top brass are looking for “near-silent” operation for stealth purposes, low fuel consumption and reduced thermal and noise signatures.

Click through the gallery above to see other vehicles used by the U.S. military.