Which makes me think of it would be prudent for the government or military to invest in this tech as well. Companies like Northrop Grumman while being bureaucratic nightmares, take safety pretty seriously.
Industry takes the lead after DARPA's investment which makes sense.
The first DARPA grand challenge was announced in 2002 and held in 2004.
Oskosh had an experimental version in the 2005 DARPA Grand Challenge, and they had something more or less usable by 2010. DoD never really went for it. That concept may reach deployment in some future form, but this version doesn't seem to be worth fielding.