As you start to play Carmageddon - GTA IV you will instantly notice how the streets are filled with crazies trying to kill you at the wheel of different vehicles. Luckily, you can use any vehicle you want: motorcycles, cars, trucks, and so on.
Carmageddon - GTA IV is a mod that has nothing at all to do with the story of the original game, and does not offer any improvement to the graphics or playability. It does, however, give you the chance to enjoy a different game mode, and a very funny one at that. In addition, we can easily turn this game mode on and off with the push of a button.
You need GTA IV installed to use this mod.