interesting Maserati was converted into a fire truck for F1 race track

 The conversion of these Maserati Quattroportes was the idea of CEA, an Italian fire extinguisher manufacturer, who hired Italian coachbuilder Grazia to build it. Grazia didn't modify the chassis but instead chopped the roof off from the B-pillar back and turned it into a two-door pickup, similar to an Australian ute. 

 All five of the Maserati firetruck conversions were sold following their service in F1 and have exchanged hands several times since then.

https://www.thedrive.com/news/this-1967-maserati-quattroporte-pickup-conversion-was-a-formula-1-fire-truck