I understood that the Suze's van was an Antem, and you were surprised that the answer was not the one I was searching, because they look very similar. Perhaps they are both a job of my obscure name.
I don't know who was the coachbuilder of the the Suze van. I just said Antem because Antem bodied another truck. And I tried Besset because there is a very similar looking bus. But I'm afraid at guessing an obscure coachbuilder because i don't have the slightest ideau of which way to go.
BTW If it's not Antem, Heuliez or Besset and if it's a Citroën truck, then it's bodied by
Marcel Breuil Thanks to Google negative Search !