Douglas - Do you have any information about how this unit was equipped and/or crewed?
From what I know about small vans like this, I am guessing a four person crew, a 1000 LPM pump and a 500 liter water tank with a first aid hose reel, as well as the small ladder on the roof.
Not all that much gear, but still quicker than walking!
Added by Douglas John Kipling on 09 February 2020.