Flatbed
Flatbed from GTA III era games
The Flatbed is a vehicle that is available on all the GTA III Era games. It is a heavy truck that can be usually found in the industrial district of all the games. Generally this truck drives at slow speeds; however if given the time and space for it to accelerate to full speed it can send oncoming cars flying. The military version of this truck that carries soldiers is the Barracks OL.
GTA IV Flatbed
The Flatbed in GTA IV isn't very different from the GTA III era Flatbed. It is still a large, slow truck that isn't stopped easily. It can be found in the industrial areas of Bohan empty or carrying various loads.