Don't see this everyday.

That is a M109A6 Paladin, aka the Howitzer. That is what i used to drive for the past 8 years in the Army. It wont do 60 Mph, they are rated at 38 , I think I may have got one up to 41mph on a downhill. They have a massive detroit deisel, auto trans. I have tried to get one stuck before to no avail. They shoot a 155mm round up to 18k.