Last week spy photos materialized that seemed to prove the existence of a Colorado ZR2 based SUV, unfortunately, that's wishful thinking.

Sources within GM confirmed to SpiedBilde the mule in question is not a ZR2 based prtotype, but a mule for the ZH2 Hydrogen program for the U.S Military.

GM's ZH2 Fuel Cell concept does use a stretched and worked over Colorado-chassis in order to make it more suitable to life in the military, as of now it's unclear if GM would consider a version for civilian use.

The Army will begin testing the hydrogen-powered ZH2 in proper field conditions sometime next year.