In January, the Army began officially testing the Chevy Colorado ZH2, the first ground-mobility combat vehicle that, if fielded, would be powered by a revolutionary new hydrogen fuel cell. The result of a $4 million collaboration between GM and the U.S. Army Tank Automotive Research, Development, and Engineering Center (TARDEC), a functional hydrogen fuel cell would mean a greatly diminished heat signature and near-silent electric power system, making the ZH2 not just a more efficient pickup for military operations, but a strategically valuable asset downrange. Less noise means less exposure, which means less risk of showing up on enemy scopes.