OK, it's a Foam Cannon.
It looks like a Scania but they have brakes. This one seems to need assistance by virtue of wheel blocks!
So would say a east europe/russia or far eastern asia or pasific isles.
Ok - bit of a hint, the truck is western european, they know longer exist as a direct truck manufacture, but were swallowed up another truck manufacture and then another, and now are part of one of the biggest truck manufactures (iv u can work that out)
the blocks under the wheels, normally were designed to stop the truck rolling away and in this case into an aeroplane, as they usaullly sat around for a while and were not moved much. (have you ever seen someone trying to drive away a truck that has been chocked - funny) Hence most airfield vehicles had low mileage, but that that does not mean they were looked after any better, when I use to work at Heathrow, even I was surprised how much damaged and abuse airport vehicles got.
Alos the logo on the front grill is a small hint Monsieur
