You can find all the promised vehicles hereor most of them can be seen here where the developer mentioned all the other types of transport, namely buses, elevated trains&trains, subway and planes./in czech language/
There was a possibility to fill the trunk of the car with a body,weapons(as developers promised)or perhaps with some stuff that Vito was able to buy in the city(like electric appliance)
If anyone has seen an ambulance in the vanilla game I will edit this.
In the trunk of the car you can see a baseball bat, like originally stated players could hide weapons and bodies in the trunk.
From one of the first screenshots released, an arcticulated lorry can be seen turning a corner.The Dezilla also made an apperance in the previews for Mafia 2, but did not appear in the final game.
Dezilla from one of the Mafia 2 developer diaries was already in the game.
Another missing car depicted in Mafia II's Digital Deluxe Artbook.
A cut Trago Oil articulated trailer in Mafia II's Carcyclopedia.
Unknown texture name, presumably belonging to a miliatry vehicle.
Texture map of an unused half-track (presumably based on a Sd.Kfz. 251.
Texture map of a Wespe featured during the first chapter of the final game.
An unnamed military truck of the Italian military based on the Officine Meccaniche Taurus featured during the first chapter of the final game but is not drivable normally.
Failed attempt to use the truck and trailer. I hope to get soon
Walter(15:13) 58 viewsWalter Military Jeep was originally a part of the main game itself. However as an excluse car it was later sold in a DLC. You can see it passing by at 1:32.
Mafia2 tank.avi(00:00) 33 viewsThere is also a texture of The German Wespe armored vehicle in the game which was prepared for some war mission on Sicily.It is necessary to say that this vehicle has no geometry. It was used only for a missing cutscene.