I noticed this decommissioned fire department truck in the Frankfurt suburb of Niederrad. Couldn't get much boxier, could it? But boxes make sense for hauling stuff. My son has a toy one of these. I find something very appealing about the no-frills shape of medium-size Mercedes truck and vans. Form follows function. Like the 207D van posted on AL a while ago. Not sure of the era of this unit: late 1980s, perhaps?
The M-B van that started it all was a beautiful thing: the 1955 L319.